Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a906071e7d5c883…

MALICIOUS

PDF

16.6 KB Created: 2019-04-29 22:45:16 +01:00 Authoring application: mPDF 5.7
MD5: 23e7f6e695d94e0e2e9df930e1ada43e SHA-1: 5e0f92065a9477dfe6f21a2a2996531978fe8461 SHA-256: 3a906071e7d5c8831cdb6176c056003519fc0d0b2e6efed68cdca3a9d8e28352
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external URLs, identified as a link farm. While the specific content of these links is benign, the sheer volume and the heuristic firing of PDF_SEO_LINK_FARM suggest a malicious intent, likely for SEO manipulation or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/2a03a09a04a05/Batman-Black-and-White-Batman-Black-and-White-1-by-Mark-Chiarello.pdf
    • http://muicuiu.dumb1.com/8a02a09a01a02a09/Mastering-Digital-Black-and-White-A-Photographer-s-Guide-to-High-Quality-Black-And-White-Imaging-and-Printing-by-Amadou-Diallo.pdf
    • http://muicuiu.dumb1.com/8a03a01a08a00/Batman-White-Knight-by-Sean-Gordon-Murphy.pdf
    • http://muicuiu.dumb1.com/2a01a06a08a01a09/White-Women-The-Sex-Black-Men-Love-Why-White-Women-Is-the-Choice-for-Cheating-Black-Men-by-Raymoni-Love.pdf
    • http://muicuiu.dumb1.com/4a08a09a00a09a01/Black-Berry-Sweet-Juice-On-Being-Black-and-White-in-Canada-by-Lawrence-Hill.pdf
    • http://muicuiu.dumb1.com/3a00a07a08a09a06/Batman-The-Black-Glove-by-Grant-Morrison.pdf
    • http://muicuiu.dumb1.com/3a00a02a01a07a02/White-on-Black-on-White-by-Coleman-Dowell.pdf
    • http://muicuiu.dumb1.com/2a06a02a01a06a05/Black-In-White-Quentin-Black-Mystery-1-by-J-C-Andrijeski.pdf
    • http://muicuiu.dumb1.com/1a00a05a03a09/Batman-amp-Robin-Batman-Reborn-by-Grant-Morrison.pdf
    • http://muicuiu.dumb1.com/3a00a07a09a09a04/Batman-The-Strange-Deaths-of-Batman-by-Cary-Bates.pdf
    • http://muicuiu.dumb1.com/1a00a06a05a06a01/The-Black-amp-White-You-Don-t-See-by-Des-Jernigan.pdf
    • http://muicuiu.dumb1.com/4a05a09a06a07a08/Black-and-White-by-Gilbert-Sorrentino.pdf
    • http://muicuiu.dumb1.com/1a09a08a05a09a08/Not-Just-Black-and-White-by-Lesley-Williams.pdf
    • http://muicuiu.dumb1.com/8a06a09a09a07a02/White-on-Black-by-Tana-Hoban.pdf
    • http://muicuiu.dumb1.com/1a02a04a02a00a00/Ashen-Black-Dawn-1-by-P-J-White.pdf
    • http://muicuiu.dumb1.com/7a04a07a00a08a03/Black-White-Other-by-Lise-Funderburg.pdf
    • http://muicuiu.dumb1.com/9a06a09a07a02/Black-and-White-by-Paul-Volponi.pdf
    • http://muicuiu.dumb1.com/8a06a09a09a06a05/Black-on-White-by-Tana-Hoban.pdf
    • http://muicuiu.dumb1.com/1a01a09a06a01a07/The-Color-Between-Black-and-White-by-S-C-Russell.pdf
    • http://muicuiu.dumb1.com/3a01a08a08a09a07/Black-and-White-by-Eric-Walters.pdf
    • http://muicuiu.dumb1.com/3a00a07a08a09a06/Batman-The-Black-Glove-by-Grant-Morrison.p

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