Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5a5fa0eb1245ed8…

MALICIOUS

PDF

12.9 KB Created: 2019-04-30 06:11:47 +01:00 Authoring application: mPDF 5.7
MD5: b32ce225696c8167a8f15e65b6ea28ad SHA-1: 1f4386d110de7aa18130c7d1cf3de3791d345f47 SHA-256: a5a5fa0eb1245ed88203a7f3cfbd41cc9817e9ec93b66e1302a7bc363007ab5d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links likely serve as a lure to redirect users to potentially malicious websites or phishing pages. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://muicuiu.dumb1.com/3a00a04a07a03a03/Sin-of-Omission-Satyr-7-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/2a08a07a05a05a07/Love-in-War-Satyr-1-5-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/4a05a07a02a02a03/Auction-Action-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/3a04a07a00a04a08/Electrochemistry-Chemistry-3-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/1a09a09a00a09a09/Uncorked-Bottled-Up-4-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/4a09a05a02a02a02/Backward-Bronco-s-Boys-3-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/4a01a08a05a06a00/Love-Comes-To-Light-Senses-6-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/3a03a08a03a07a04/Love-Comes-Silently-Senses-1-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/3a03a02a07a06a07/An-Unexpected-Vintage-Bottled-Up-4-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/3a03a02a09a04a06/Artistic-Pursuits-Bottled-Up-7-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/3a03a09a05a01a03/Crunch-Time-Work-Out-4-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/4a03a02a02a01a07/Personal-Training-Work-Out-6-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/4a01a03a06a08a00/Dumped-in-Oz-Tales-from-Kansas-1-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/2a08a07a03a09a03/Simple-Gifts-Farm-1-5-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/3a02a02a02a00a04/Crunch-Time-Work-Out-4-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/2a02a04a01a08a02/A-Daring-Ride-The-Bullriders-2-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/2a05a07a01a04a05/Love-Comes-in-Darkness-Senses-2-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/3a03a00a04a04a02/A-Courageous-Ride-The-Bullriders-3-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/4a05a07a02a08a03/Love-Means-No-Limits-Farm-6-by-Andrew-Grey.pdf
    • http://muicuiu.dumb1.com/3a03a06a09a01a03/Fire-and-Flint-Carlisle-Deputies-1-by-Andrew-Grey.pdf

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