Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbfe5b968f84933f…

MALICIOUS

PDF

14.9 KB Created: 2019-05-05 15:40:38 +01:00 Authoring application: mPDF 5.7
MD5: a3cc8549d239cda59ccd988871581796 SHA-1: 61c12a4d8493c79f0faba266df1dc3c6647d44a0 SHA-256: cbfe5b968f84933f8a6249a4276ba0e289a51382be54887a0c1a43f626523bff
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. These URLs point to various book titles hosted on the same domain, suggesting a link farm or SEO manipulation tactic. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firings indicate a malicious intent, likely to redirect users to potentially harmful content or to manipulate search engine rankings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/9a06a00a01a01a04/Verruchte-N-chte-Angels-of-the-Dark-1-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/3a05a01a01a06a09/Wicked-Nights-Angels-of-the-Dark-1-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/4a01a04a09a08/Beauty-Awakened-Angels-of-the-Dark-2-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/8a08a08a07a03/Wicked-Nights-Angels-of-the-Dark-1-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/5a09a02a06a06a05/Sedotta-da-un-angelo-Angels-of-the-Dark-1-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/4a03a07a04a00/Dark-Taste-of-Rapture-Alien-Huntress-6-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/2a05a09a08a02a06/Firstlife-Everlife-1-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/1a01a06a09a04a06/Animal-Instincts-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/2a01a02a00a05a04/Temptation-in-Shadows-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/3a06a05a09a05a07/Burning-Dawn-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/2a00a09a03a00a06/Lifeblood-Everlife-2-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/2a05a06a01a03a07/The-One-You-Want-The-Original-Heartbreakers-0-5-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/2a07a07a04a01a02/Heart-of-the-Dragon-Atlantis-1-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/4a05a00a08a01/The-Darkest-Fire-Lords-of-the-Underworld-0-5-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/4a05a00a04/The-Darkest-Torment-Lords-of-the-Underworld-12-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/1a04a08a06a04a04/The-Darkest-Touch-Lords-of-the-Underworld-11-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/2a06a07a03a04a07/The-Darkest-Promise-Lords-of-the-Underworld-13-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/1a04a08a06a03a06/The-Darkest-Craving-Lords-of-The-Underworld-10-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/3a03a07a08a00a00/Schwarze-Niederlage-Lords-of-the-Underworld-8-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/4a01a03a07a05/The-Darkest-Whisper-Lords-of-the-Underworld-4-by-Gena-Showalter.pdf
    • http://muicuiu.dumb1.com/2a05a06a01a03a07/The-One-You-Want-The-Orig

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