Malicious PDF — malware analysis report

Static analysis result for SHA-256 41c12a8646aff4ac…

MALICIOUS

PDF

13.6 KB Created: 2019-04-30 05:40:14 +01:00 Authoring application: mPDF 5.7
MD5: 1a1f980b877cf62b6ef697afd6a20a2b SHA-1: 9b54dea458eecb096d72a042ce5ecefeb9d381f3 SHA-256: 41c12a8646aff4ac1e47ceb20b3702012f2d1f8eecfc2e84eabba5113edbf3f8
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm. The heuristic PDF_SEO_LINK_FARM indicates this is a technique to distribute malicious content or to artificially inflate traffic to specific sites. While the URLs themselves are currently marked as benign, the sheer volume and structure suggest a malicious intent to redirect users to potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/1a07a04a05a06a03/Ellie-s-Wounded-Heroes-Wounded-Warriors-1-by-Marla-Monroe.pdf
    • http://muicuiu.dumb1.com/1a02a03a00a02a02/Wounded-at-Home-Wounded-SEAL-2-by-Mitzi-Pool-Bridges.pdf
    • http://muicuiu.dumb1.com/1a02a07a08a08a06/Love-the-Wounded-Wounded-3-by-Lynn-Dove.pdf
    • http://muicuiu.dumb1.com/2a03a04a02a05a07/Legally-Hot-includes-Wounded-Warriors-2-by-Lora-Leigh.pdf
    • http://muicuiu.dumb1.com/2a05a08a00a00/Waiting-for-an-Eclipse-Wounded-Warriors-Series-2-by-Karen-Wiesner.pdf
    • http://muicuiu.dumb1.com/2a02a04a07a09/Wounded-by-Ben-Burgess-Jr-.pdf
    • http://muicuiu.dumb1.com/3a06a08a06a00a05/Wounded-Vol-1-Little-Goddess-2-by-Amy-Lane.pdf
    • http://muicuiu.dumb1.com/3a05a00a04a02a02/Wounded-by-Percival-Everett.pdf
    • http://muicuiu.dumb1.com/1a02a07a02a03a03/Wounded-by-Jasinda-Wilder.pdf
    • http://muicuiu.dumb1.com/2a02a03a07a06a01/The-Wounded-Sky-by-Diane-Duane.pdf
    • http://muicuiu.dumb1.com/1a00a09a00a00a07a00/The-Wounded-Seven-Forges-1-1-by-James-A-Moore.pdf
    • http://muicuiu.dumb1.com/3a09a05a07a07a07/The-Wounded-The-Telling-2-5-by-Eden-Winters.pdf
    • http://muicuiu.dumb1.com/1a01a01a09a06a05a03/Mike-Wounded-Hearts-2-by-Fel-Fern.pdf
    • http://muicuiu.dumb1.com/3a08a00a03a06a03/Shoot-The-Wounded-by-Lynn-Dove.pdf
    • http://muicuiu.dumb1.com/3a03a08a09a07a07/Wounded-Scarred-Book-2-by-T-T-Kove.pdf
    • http://muicuiu.dumb1.com/1a07a07a01a06/Wounded-by-Barbara-Joyce-Hawryluk.pdf
    • http://muicuiu.dumb1.com/4a00a06a04a07a07/The-Wounded-Warrior-s-Wife-by-Hannah-R-Conway.pdf
    • http://muicuiu.dumb1.com/4a09a07a04a08a09/A-Wounded-Realm-The-Blood-of-Kings-2-by-K-M-Ashman.pdf
    • http://muicuiu.dumb1.com/4a00a04a03a04a06/Wounded-Courage-Lucky-Thirteen-2-by-S-M-Butler.pdf
    • http://muicuiu.dumb1.com/3a04a08a06a00a07/Wounded-Hearts-Men-in-Blue-5-by-Jayne-Rylon.pdf

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