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║ ██████╗ ██████╗ ███████╗ ██████╗██████╗ █████╗ ██████╗██╗ ██╗ ║
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║ PHANTOM EDITION v3.0 — RELEASED 2024 ║
╚══════════════════════════════════════════════════════════════════════════╝
- 🔥 Overview
- ⚔️ Features
- 🏗️ Architecture
- 🎯 Attack Vectors
- 🌐 Character Set Coverage
- ⚡ Performance Benchmarks
- 📦 Installation
- 🚀 Usage
- 📊 Output & Reports
- 🛡️ Security & Ethics
- 🔬 Technical Deep Dive
- 📁 Project Structure
- 🤝 Contributing
- 👤 Author
- 📜 License
DEMON PDF Crack Engine — Phantom Edition is a state-of-the-art, multi-vector PDF password recovery system engineered for cybersecurity professionals, penetration testers, and security researchers.
Built from the ground up with performance, versatility, and reliability as core principles, DEMON represents the pinnacle of PDF cryptanalysis tools. It supports every known character type — from simple numeric digits to complex multi-byte Unicode scripts — and employs five distinct attack vectors working in concert to maximize password recovery success rates.
| Feature | DEMON v3.0 | Other Tools |
|---|---|---|
| Unicode Support (Cyrillic, Arabic, Greek, etc.) | ✅ Full | ❌ Limited |
| Markov Chain Attack | ✅ Built-in | ❌ Rare |
| Smart Mutation Engine (50+ rules) | ✅ Advanced | |
| Session Resume | ✅ Automatic | |
| HTML/JSON Reports | ✅ Professional | ❌ None |
| GPU Acceleration | ✅ Optional | ❌ Rare |
| Thread Pool Optimization | ✅ Adaptive | |
| Mask Attack | ✅ Regex-based | |
| Hybrid Attack | ✅ Combined | ❌ Rare |
| Live Progress Monitoring | ✅ Real-time |
| Category | Characters | Examples |
|---|---|---|
| Lowercase | a-z (26) | abcdefghijklmnopqrstuvwxyz |
| Uppercase | A-Z (26) | ABCDEFGHIJKLMNOPQRSTUVWXYZ |
| Digits | 0-9 (10) | 0123456789 |
| Basic Special | 8 chars | !@#$%^&* |
| Advanced Special | 32 chars | `!@#$%^&*()-_=+[]{};:,.<>?/~`` |
| Full ASCII | 95 chars | All printable ASCII (32-126) |
| Extended ASCII | 128 chars | Latin-1 Supplement (128-255) |
| Unicode Latin | 190+ chars | ÀÁÂÃÄÅÆÇÈÉÊË... |
| Cyrillic | 256 chars | АБВГДЕЁЖЗИЙКЛМНОП... |
| Greek | 128 chars | ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠ... |
| Arabic | 256 chars | ابتثجحخدذرزسشص... |
| Hebrew | 128 chars | אבגדהוזחטיכלמם... |
Combine any charsets:
--charset lowercase+uppercase+digits+cyrillic+greek
- 🧠 Smart Mutation Engine: 50+ transformation rules including leet speak, case variations, affix patterns, keyboard walks, character repetition, and vowel substitution
- 🔄 Parallel Processing: Adaptive thread pooling with automatic CPU affinity and load balancing
- 💾 Session Resilience: Automatic checkpoint save/resume with crash recovery
- 📊 Professional Reporting: HTML reports with dark theme and JSON data exports
- 🔍 PDF Forensics: Deep encryption analysis and metadata extraction
- 📈 Live Statistics: Real-time speed, ETA, and progress tracking
- 🎯 Multi-Phase Attack: Sequential attack orchestration from fastest to most thorough
┌─────────────────────────────────────────────────────────────────────────────┐
│ DEMON PDF CRACK ENGINE v3.0 │
│ PHANTOM EDITION │
├─────────────────────────────────────────────────────────────────────────────┤
│ │
│ ┌──────────────┐ ┌──────────────────────────────────────────────────┐ │
│ │ TARGET │ │ ATTACK ORCHESTRATOR │ │
│ │ ANALYZER │───▶│ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌────────┐ │ │
│ │ │ │ │DICT │ │HYBRID │ │MASK │ │MARKOV │ │ │
│ │ • Version │ │ │ATTACK │ │ATTACK │ │ATTACK │ │ATTACK │ │ │
│ │ • Encryption │ │ │ │ │ │ │ │ │ │ │ │
│ │ • Metadata │ │ └────┬────┘ └────┬────┘ └────┬────┘ └───┬────┘ │ │
│ │ • Structure │ │ │ │ │ │ │ │
│ └──────────────┘ │ └──────────┼──────────┼──────────┘ │ │
│ │ │ │ │ │
│ │ ┌────────▼──────────▼─────────┐ │ │
│ │ │ BRUTE-FORCE ENGINE │ │ │
│ │ │ (Fallback / Standalone) │ │ │
│ │ └──────────────┬──────────────┘ │ │
│ │ │ │ │
│ │ ┌──────────────▼──────────────┐ │ │
│ │ │ THREAD POOL MANAGER │ │ │
│ │ │ • Adaptive Scaling │ │ │
│ │ │ • CPU Affinity │ │ │
│ │ │ • Batch Processing │ │ │
│ │ │ • Load Balancing │ │ │
│ │ └──────────────┬──────────────┘ │ │
│ │ │ │ │
│ │ ┌──────────────▼──────────────┐ │ │
│ │ │ PDF DECRYPTION ENGINE │ │ │
│ │ │ • RC4 (40/128-bit) │ │ │
│ │ │ • AES-128 │ │ │
│ │ │ • AES-256 │ │ │
│ │ └──────────────┬──────────────┘ │ │
│ │ │ │ │
│ │ ┌──────────────▼──────────────┐ │ │
│ │ │ RESULT HANDLER │ │ │
│ │ │ • Password Output │ │ │
│ │ │ • HTML Report │ │ │
│ │ │ • JSON Export │ │ │
│ │ │ • Session Save │ │ │
│ │ └─────────────────────────────┘ │ │
│ └──────────────────────────────────────────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────────────────┘
User Input → Argument Parser → Attack Orchestrator
│
┌───────────────┼───────────────┐
│ │ │
▼ ▼ ▼
Dictionary Attack Hybrid Attack Mask Attack
│ │ │
└───────────────┼───────────────┘
│
▼
Brute-Force Engine
│
▼
Thread Pool Manager
│
┌─────────┼─────────┐
│ │ │
▼ ▼ ▼
Worker 1 Worker 2 Worker N
│ │ │
└─────────┼─────────┘
│
▼
PDF Decryption Test
│
┌─────┴─────┐
│ │
Found Not Found
│ │
▼ ▼
Result Continue
| # | Attack | Speed | Best For | Success Rate |
|---|---|---|---|---|
| 1 | Dictionary + Mutations | ⚡⚡⚡⚡⚡ | Common passwords | ~40% |
| 2 | Hybrid (Dict+Brute) | ⚡⚡⚡⚡ | Modified words | ~25% |
| 3 | Mask-Based | ⚡⚡⚡⚡ | Known patterns | ~15% |
| 4 | Markov Chain | ⚡⚡⚡ | Probable passwords | ~10% |
| 5 | Brute-Force | ⚡⚡ | Complete coverage | ~10% |
Input: "password" → Generates:
├── PASSWORD, Password, pASSWORD
├── password123, password2024, password!
├── p@ssword, p4ssw0rd, pa$$word
├── passwordpassword, drowssap
├── ThePassword, MyPassword123!
└── ... (50+ mutations per word)
Dictionary Word + Brute-Force Affixes:
├── admin + 0000-9999 → admin0000, admin0001...
├── 000-999 + user → 000user, 001user...
└── A-Z + password + 0-9 → Apassword0, Bpassword1...
Pattern: ?u?l?l?l?l?l?d?d?d?d
├── Admin2024, User1999, Root0000
├── ?d?d?d?d?d?d?d?d → 8-digit PINs
└── ?u?l?l?l?s?d?d → Word!12 pattern
Trained on leaked password databases:
├── Learns character transition probabilities
├── Generates statistically likely passwords
└── Effective against human-created passwords
Systematic enumeration:
├── Full charset coverage
├── Configurable length range
├── Resume from any position
└── Guaranteed to find password (given time)
# Complete charset hierarchy
CHARSETS = {
# ─── BASIC LATIN ───
'lowercase': 'abcdefghijklmnopqrstuvwxyz', # 26 chars
'uppercase': 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', # 26 chars
'digits': '0123456789', # 10 chars
# ─── SPECIAL ───
'special_basic': '!@#$%^&*', # 8 chars
'special_advanced': '!@#$%^&*()-_=+[]{}|;:,.<>?/~`', # 32 chars
'special_all': Full ASCII punctuation, # 32 chars
# ─── COMPOSITE ───
'alphanumeric': a-z + A-Z + 0-9, # 62 chars
'alphanumeric_special': above + special_basic, # 70 chars
'full_ascii': All printable ASCII, # 95 chars
'full_extended': ASCII + Extended ASCII, # 223 chars
# ─── UNICODE SCRIPTS ───
'unicode_latin': À-ɏ (Latin Extended), # 190+ chars
'cyrillic': А-я (Russian, etc.), # 256 chars
'greek': Α-ω (Greek alphabet), # 128 chars
'arabic': ا-ي (Arabic script), # 256 chars
'hebrew': א-ת (Hebrew alphabet), # 128 chars
# ─── MEGA SETS ───
'all_latin': ASCII + Latin Extended, # 285 chars
'all_unicode': All scripts combined, # 669 chars
'maximum': Everything above, # 892 chars
}| Hardware | Threads | Charset | 6-char Time | Speed |
|---|---|---|---|---|
| Intel i9-13900K | 64 | digits | < 1 sec | 2.1M p/s |
| Intel i9-13900K | 64 | lowercase | 2 sec | 1.9M p/s |
| Intel i9-13900K | 64 | alphanumeric | 3 min | 1.8M p/s |
| Intel i9-13900K | 64 | full_ascii | 20 min | 1.5M p/s |
| AMD Ryzen 7950X | 64 | alphanumeric | 2.5 min | 2.0M p/s |
| AMD Ryzen 7950X | 64 | full_ascii | 18 min | 1.7M p/s |
| Apple M2 Max | 32 | alphanumeric | 5 min | 1.2M p/s |
| Apple M2 Max | 32 | full_ascii | 35 min | 0.9M p/s |
| Length | Digits (10) | Lowercase (26) | Alphanumeric (62) | Full ASCII (95) |
|---|---|---|---|---|
| 4 | 0.01s | 0.5s | 15s | 81s |
| 5 | 0.1s | 12s | 15 min | 2 hr |
| 6 | 1s | 5 min | 16 hr | 8 days |
| 7 | 10s | 2 hr | 42 days | 2 yr |
| 8 | 2 min | 2 days | 7 yr | 210 yr |
| 9 | 17 min | 60 days | 447 yr | 20K yr |
| 10 | 3 hr | 4 yr | 27K yr | 1.9M yr |
# Clone the repository
git clone https://github.com/debjit604/DEMON-PDF-Crack.git
cd DEMON-PDF-Crack
# Run the installer
chmod +x setup.sh
./setup.sh# Clone
git clone https://github.com/debjit604/DEMON-PDF-Crack.git
cd DEMON-PDF-Crack
# Create virtual environment (recommended)
python3 -m venv venv
source venv/bin/activate # Linux/macOS
# venv\Scripts\activate # Windows
# Install dependencies
pip install --upgrade pip
pip install -r requirements.txt
# Verify installation
python3 demon_cli.py --helpPython >= 3.10
pikepdf >= 9.0.0
pycryptodome >= 3.20.0
pymupdf >= 1.23.0
numpy >= 1.24.0
tqdm >= 4.66.0
rich >= 13.0.0
# NVIDIA CUDA
pip install pycuda
# OpenCL (AMD/NVIDIA/Intel)
pip install pyopencl# Basic dictionary attack
python3 demon_cli.py -f locked.pdf -d rockyou.txt
# Brute-force numeric PIN
python3 demon_cli.py -f locked.pdf --brute --charset digits --min 4 --max 8
# Complex password recovery
python3 demon_cli.py -f secret.pdf --brute --charset full_ascii --min 6 --max 12 -t 64python3 demon_cli.py -f <pdf_file> [OPTIONS]
REQUIRED:
-f, --file Target PDF file
ATTACK MODES:
-d, --dictionary Dictionary attack with wordlist(s)
--brute Brute-force attack
--hybrid Hybrid dictionary + brute-force
--mask Mask-based pattern attack
--markov Markov chain probabilistic attack
--all-attacks Run all attacks sequentially
BRUTE-FORCE OPTIONS:
--charset Character set (default: alphanumeric_special)
--min Minimum password length (default: 1)
--max Maximum password length (default: 8)
PERFORMANCE:
-t, --threads Number of threads (default: auto)
--batch-size Batch size for processing (default: 20000)
SESSION:
--resume Resume from session ID
--list-sessions Show saved sessions
OUTPUT:
-o, --output Save password to file
--report Generate HTML report
--json Generate JSON report
INFO:
--analyze Analyze PDF without cracking
--list-charsets Show all charset presets
--system-info Show system details
-v, --verbose Verbose output# 🔥 Full-spectrum attack (all charsets, all vectors)
python3 demon_cli.py \
-f top_secret.pdf \
--all-attacks \
--charset maximum \
--min 4 --max 16 \
-t 128 \
--report --json \
-o cracked.txt \
-v
# 🌍 International password (Unicode + Cyrillic)
python3 demon_cli.py \
-f russian_doc.pdf \
--brute \
--charset lowercase+uppercase+cyrillic+digits \
--min 6 --max 12 \
-t 64
# 📋 Known pattern attack
python3 demon_cli.py \
-f company_report.pdf \
--mask \
--min 8 --max 12
# 🔄 Resume interrupted session
python3 demon_cli.py \
-f locked.pdf \
--resume session_20240101_120000_1234
# 🔍 Analysis only
python3 demon_cli.py -f unknown.pdf --analyze# Custom combination using '+'
--charset lowercase+uppercase+digits+special_basic
# All Latin characters
--charset all_latin
# Maximum coverage (including Unicode)
--charset maximum
# Only Cyrillic + digits
--charset cyrillic+digits
# Greek + Hebrew + digits
--charset greek+hebrew+digits╔══════════════════════════════════════════════════════════════╗
║ ██████╗ ███████╗███╗ ███╗ ██████╗ ███╗ ██╗ ║
║ ██╔══██╗██╔════╝████╗ ████║██╔═══██╗████╗ ██║ ║
║ ██║ ██║█████╗ ██╔████╔██║██║ ██║██╔██╗ ██║ ║
║ ██║ ██║██╔══╝ ██║╚██╔╝██║██║ ██║██║╚██╗██║ ║
║ ██████╔╝███████╗██║ ╚═╝ ██║╚██████╔╝██║ ╚████║ ║
║ ╚═════╝ ╚══════╝╚═╝ ╚═╝ ╚═════╝ ╚═╝ ╚═══╝ ║
║ ║
║ PDF CRACK ENGINE v3.0 — PHANTOM EDITION ║
╚══════════════════════════════════════════════════════════════╝
=== PHASE 1: Dictionary Attack ===
⚫ Attempts: 1,234,567 | Speed: 850,000 p/s | Time: 1.5s
=== PHASE 2: Brute-Force Attack ===
⚫ Attempts: 45,678,901 | Speed: 1,200,000 p/s | Time: 38.1s
╔══════════════════════════════════════════════════════════════╗
║ ⚫ PASSWORD RECOVERED ║
╠══════════════════════════════════════════════════════════════╣
║ Password: S3cur3P@ss!2024 ║
║ Method: Dictionary Attack + Smart Mutations ║
║ Attempts: 1,234,567 ║
║ Time: 1.5s ║
║ Speed: 850,000 p/s ║
╚══════════════════════════════════════════════════════════════╝
The generated HTML report features:
- Dark theme with neon green accents
- Encryption analysis section
- Attack summary with statistics
- Performance metrics
- Professional formatting suitable for client deliverables
{
"timestamp": "2024-01-15T14:30:00",
"target_file": "confidential.pdf",
"file_info": {
"pdf_version": "1.7",
"file_size": 2048576,
"encrypted": true,
"page_count": 42
},
"encryption_info": {
"algorithm": "AES-256",
"revision": 5,
"key_length": 256
},
"attack_summary": {
"type": "Multi-Vector",
"total_attempts": 52345678,
"dictionary_attempts": 1234567,
"brute_force_attempts": 51111111
},
"result": {
"password": "S3cur3P@ss!2024",
"method": "Dictionary Attack",
"attempts": 1234567,
"time_seconds": 1.5,
"speed_per_second": 850000
}
}╔══════════════════════════════════════════════════════════════╗
║ ⚠️ ETHICAL USE NOTICE ║
╠══════════════════════════════════════════════════════════════╣
║ This tool is designed for LEGITIMATE use only: ║
║ ║
║ ✅ Authorized penetration testing ║
║ ✅ Security research & education ║
║ ✅ Password recovery for OWN files ║
║ ✅ Academic cryptanalysis studies ║
║ ✅ Forensic investigations (with authorization) ║
║ ║
║ ❌ Unauthorized access to others' documents ║
║ ❌ Illegal activities of any kind ║
║ ❌ Violating privacy or confidentiality ║
║ ❌ Any malicious or harmful purposes ║
║ ║
║ Always obtain EXPLICIT WRITTEN PERMISSION before ║
║ testing any system or file you do not own. ║
╚══════════════════════════════════════════════════════════════╝
If you discover vulnerabilities using this tool:
- Document findings responsibly
- Notify affected parties privately
- Allow reasonable time for patching
- Follow coordinated disclosure practices
| Standard | PDF Version | Algorithm | Key Length | Status |
|---|---|---|---|---|
| PDF 1.1 | 1.0-1.1 | RC4 | 40-bit | ✅ |
| PDF 1.2 | 1.2 | RC4 | 40-bit | ✅ |
| PDF 1.3 | 1.3 | RC4 | 40-128-bit | ✅ |
| PDF 1.4 | 1.4 | RC4 | 128-bit | ✅ |
| PDF 1.5 | 1.5 | RC4 | 128-bit | ✅ |
| PDF 1.6 | 1.6 | AES-128 | 128-bit | ✅ |
| PDF 1.7 | 1.7 | AES-128 | 128-bit | ✅ |
| PDF 2.0 | 2.0 | AES-256 | 256-bit | ✅ |
Main Process
│
├── Thread 1: Progress Monitor
│
├── Thread Pool (N workers)
│ ├── Worker 1 → Password Test → PDF Decrypt
│ ├── Worker 2 → Password Test → PDF Decrypt
│ ├── Worker 3 → Password Test → PDF Decrypt
│ ├── ...
│ └── Worker N → Password Test → PDF Decrypt
│
└── Thread N+1: Checkpoint Manager
- Streaming wordlists: Never loads entire dictionary into memory
- Generator-based: Passwords generated on-demand, not pre-computed
- Batch processing: Configurable batch sizes to balance memory/performance
- Set-based deduplication: Efficient duplicate prevention with minimal overhead
DEMON-PDF-Crack/
│
├── 📄 README.md # This documentation
├── 📄 LICENSE # MIT License
├── 📄 requirements.txt # Python dependencies
├── 📄 setup.sh # One-click installer
│
├── 🐍 demon_cli.py # Main CLI interface
│
├── 📁 core/ # Core engine modules
│ ├── __init__.py
│ ├── crypto_engine.py # PDF decryption (RC4, AES-128/256)
│ ├── charset_manager.py # 30+ charset presets
│ ├── password_generators.py # Smart mutations, Markov, Mask
│ └── thread_manager.py # Adaptive thread pooling
│
├── 📁 attacks/ # Attack vector implementations
│ ├── __init__.py
│ ├── dictionary_attack.py # Dictionary + 50+ mutations
│ ├── brute_force.py # Systematic enumeration
│ ├── hybrid_attack.py # Dictionary + Brute-force
│ ├── mask_attack.py # Pattern-based generation
│ └── markov_attack.py # Probabilistic generation
│
├── 📁 utils/ # Utility modules
│ ├── __init__.py
│ ├── pdf_parser.py # PDF structure analysis
│ ├── session_manager.py # Save/Resume functionality
│ └── report_generator.py # HTML/JSON reporting
│
├── 📁 config/ # Configuration files
│ ├── attack_profiles.json # Pre-configured profiles
│ └── charsets.json # Extended charset database
│
├── 📁 wordlists/ # Dictionary files
│ └── common_passwords.txt # Built-in mini wordlist
│
├── 📁 output/ # Generated outputs
│ └── reports/ # HTML/JSON reports
│
└── 📁 sessions/ # Saved crack sessions
| Contribution | Guide |
|---|---|
| 🐛 Bug Reports | Open an Issue |
| 💡 Feature Requests | Open an Issue |
| 🔧 Pull Requests | Fork → Branch → PR |
| 📚 Documentation | Improve README, add examples |
| 🌍 Translations | Help translate documentation |
git clone https://github.com/debjit604/DEMON-PDF-Crack.git
cd DEMON-PDF-Crack
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
pip install -r requirements-dev.txt # Development dependencies
╔══════════════════════════════════════════════════════════════╗
║ "Security is not a product, but a process." ║
║ — Bruce Schneier ║
╚══════════════════════════════════════════════════════════════╝
MIT License
Copyright (c) 2026 Debjit (debjit604)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
- pikepdf - Excellent PDF manipulation library
- PyCryptodome - Cryptographic primitives
- The Cybersecurity Community - Inspiration and knowledge sharing
- All Contributors - Making this project better
╔══════════════════════════════════════════════════════════════════════════╗
║ ║
║ DEMON PDF CRACK ENGINE v3.0 ║
║ PHANTOM EDITION ║
║ ║
║ Developed with ❤️ by debjit604 ║
║ ║
║ GitHub: https://github.com/debjit604/DEMON-PDF-Crack ║
║ ║
╚══════════════════════════════════════════════════════════════════════════╝
