Ransomware Research
OhNo-FakePDF Ransomware
OhNo-FakePDF is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2020, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- OhNo-FakePDF
- First Seen
- June 1, 2020
How OhNo-FakePDF Ransomware Works
Targeted Files
Encodes names with base64; ex -> vv1knrGjqD20PXzP7mSr4w==.qag25h
File Encryption Patterns
OhNo-FakePDF modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.[a-z0-9]{4,8}$/Ransom Note and Payment Demands
After encrypting files, OhNo-FakePDF displays ransom notes demanding payment for file recovery:
/[a-z0-9]{4,8}-readme\.txt$/Ransom message:
notes/qag25h-readme.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with OhNo-FakePDF ransomware:
Document1.pdf.exe
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About This Analysis
This OhNo-FakePDF ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like OhNo-FakePDF.
Last updated: July 30, 2025