Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2b951b9b911d253…

MALICIOUS

PDF

16.6 KB Created: 2019-04-30 10:32:40 +01:00 Authoring application: mPDF 5.7
MD5: b4a17d7fac514902ba952a44d1a79b0e SHA-1: 20adeeadd83173ba94e3a7f50ffcfb6c61d72952 SHA-256: b2b951b9b911d2537b2a923a164509267a274b2c67da0fc6b0082ed651dbac6e
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, contains URLs that are repeated, suggesting a link farm designed to redirect users. No scripts were extracted from this sample.

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/1a07a08a03a08a01/Court-of-Shadows-House-of-Furies-2-by-Madeleine-Roux.pdf
    • http://muicuiu.dumb1.com/5a06a08a01/House-of-Furies-House-of-Furies-1-by-Madeleine-Roux.pdf
    • http://muicuiu.dumb1.com/9a07a07a07a03a07/Totenham-Court-a-Pleasant-Comedy-Acted-at-the-Private-House-in-Salisbury-Court-by-Thomas-Nabbs-1639-by-Thomas-Nabbes.pdf
    • http://muicuiu.dumb1.com/3a05a01a08/Escape-from-Asylum-Asylum-0-5-by-Madeleine-Roux.pdf
    • http://muicuiu.dumb1.com/7a07a08a00a04a02/The-Asylum-Collection-Asylum-1-2-by-Madeleine-Roux.pdf
    • http://muicuiu.dumb1.com/3a06a04a05a04/Asylum-Asylum-1-by-Madeleine-Roux.pdf
    • http://muicuiu.dumb1.com/2a07a06a00a06a05/Asylum-Asylum-1-by-Madeleine-Roux.pdf
    • http://muicuiu.dumb1.com/2a00a09a06a09a01/Dragon-Awakened-Court-of-Shadows-1-by-K-N-Lee.pdf
    • http://muicuiu.dumb1.com/7a05a03a04a03a05/House-of-Secrets-House-of-Shadows-2-by-Darcy-Coates.pdf
    • http://muicuiu.dumb1.com/3a03a00a06a08a05/House-at-the-End-of-the-World-by-Madeleine-Marsh.pdf
    • http://muicuiu.dumb1.com/5a09a05a06a06/A-House-Like-a-Lotus-O-Keefe-Family-3-by-Madeleine-L-39-Engle.pdf
    • http://muicuiu.dumb1.com/7a07a08a01a05a09/The-Roux-Brothers-on-Patisserie-by-Michel-Roux.pdf
    • http://muicuiu.dumb1.com/7a06a06a07a04/The-House-at-Miller-s-Court-by-K-Patrick-Malone.pdf
    • http://muicuiu.dumb1.com/1a00a08a06a01a05a06/The-House-in-Quill-Court-by-Charlotte-Betts.pdf
    • http://muicuiu.dumb1.com/1a01a04a02a04a03a01/Camelot-s-Court-Inside-the-Kennedy-White-House-by-Robert-Dallek.pdf
    • http://muicuiu.dumb1.com/4a08a04a08a06a00/House-of-Shadows-by-Pamela-Hartshorne.pdf
    • http://muicuiu.dumb1.com/3a02a08a00a06a01/House-of-Shadows-by-Rachel-Neumeier.pdf
    • http://muicuiu.dumb1.com/2a09a02a01a03a01/Listening-for-Madeleine-A-Portrait-of-Madeleine-L-Engle-in-Many-Voices-by-Leonard-S-Marcus.pdf
    • http://muicuiu.dumb1.com/1a00a07a06a00a04/Madeleine-A-Life-of-Madeleine-St-John-by-Helen-Trinca.pdf
    • http://muicuiu.dumb1.com/6a03a09a05a02/House-of-Shadows-Enchantment-in-Crimson-1-by-Morgan-Hawke.pdf
    • http://muicuiu.dumb1.com/3a03a00a06a

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