Malicious PDF — malware analysis report

Static analysis result for SHA-256 55331c16670175a6…

MALICIOUS

PDF

15.7 KB Created: 2019-04-30 05:26:00 +01:00 Authoring application: mPDF 5.7
MD5: db20133e21225bcc7f2e61415f4f9373 SHA-1: 1d5d120202eb164e78678ec40308538b7aaab2f0 SHA-256: 55331c16670175a60c5f97c607d6368ae4b2918700116e27eb436848df19b854
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, pointing to various book titles. While the specific URLs themselves are marked as benign, the sheer volume and structure suggest a link farm intended for SEO manipulation or to obscure malicious redirects. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/3a05a08a01a01a06/Taming-Blaze-Inferno-Motorcycle-Club-1-by-Sabrina-Paige.pdf
    • http://muicuiu.dumb1.com/4a05a05a09a00a01/Taming-Blaze-Inferno-Motorcycle-Club-1-by-Sabrina-Paige.pdf
    • http://muicuiu.dumb1.com/2a09a07a03a08a07/Lilith-Lucifer-s-Legion-Motorcycle-Club-Lucifer-s-Legion-Motorcycle-Club-1-by-Kelli-Maine.pdf
    • http://muicuiu.dumb1.com/3a06a06a03a05a05/Club-Girl-Hell-Brigade-Motorcycle-Club-Book-1-by-Evelyn-Glass.pdf
    • http://muicuiu.dumb1.com/4a04a02a04a01a06/Wed-at-Leisure-Taming-2-by-Sabrina-Darby.pdf
    • http://muicuiu.dumb1.com/3a04a02a03a03a05/Double-Team-by-Sabrina-Paige.pdf
    • http://muicuiu.dumb1.com/1a07a00a04a03a07/Elias-West-Bend-Saints-1-by-Sabrina-Paige.pdf
    • http://muicuiu.dumb1.com/3a05a08a01a00a07/It-Is-What-It-Is-Noir-et-Bleu-Motorcycle-Club-3-by-D-R-Graham.pdf
    • http://muicuiu.dumb1.com/4a05a06a04a04a00/The-Saints-Motorcycle-Club-by-Cora-Hart.pdf
    • http://muicuiu.dumb1.com/4a01a04a09a09a07/Know-Me-Defiant-Motorcycle-Club-1-by-Cora-Brent.pdf
    • http://muicuiu.dumb1.com/1a02a00a04a01a05/Climbing-Out-Hawks-Motorcycle-Club-2-by-Lila-Rose.pdf
    • http://muicuiu.dumb1.com/9a09a07a00/Holding-Out-Hawks-Motorcycle-Club-1-by-Lila-Rose.pdf
    • http://muicuiu.dumb1.com/3a06a04a06a03a05/Coming-Out-Hawks-Motorcycle-Club-4-5-by-Lila-Rose.pdf
    • http://muicuiu.dumb1.com/3a09a02a00a08a02/Remember-Me-Defiant-Motorcycle-Club-3-by-Cora-Brent.pdf
    • http://muicuiu.dumb1.com/4a05a06a06a08a05/Her-Angel-His-Devil-Vipers-Motorcycle-Club-3-by-Amy-Love.pdf
    • http://muicuiu.dumb1.com/1a04a05a04a00a06/Holding-Out-Hawks-Motorcycle-Club-1-by-Lila-Rose.pdf
    • http://muicuiu.dumb1.com/3a06a05a07a07a00/Dark-Glitter-Wild-Hunt-Motorcycle-Club-1-by-C-M-Stunich.pdf
    • http://muicuiu.dumb1.com/1a08a03a05a09a04/Ghost-Rolling-Thunder-Motorcycle-Club-9-by-Candace-Blevins.pdf
    • http://muicuiu.dumb1.com/3a05a08a02a08a02/Horse-Rolling-Thunder-Motorcycle-Club-6-by-Candace-Blevins.pdf
    • http://muicuiu.dumb1.com/4a05a06a05a06a05/Burn-to-Ashes-Sons-of-Ash-Motorcycle-Club-2-by-Brynn-O-39-Connor.pdf
    • http://muicuiu.dumb1.com/4a01a04a09a09a07/Know-Me-Defiant-Motorcycle-Club

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