Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2d53fe04140ce4f…

MALICIOUS

PDF

13.4 KB Created: 2019-04-30 03:52:23 +01:00 Authoring application: mPDF 5.7
MD5: cce94bad10095c4f07541ca785d81b44 SHA-1: 0e2f7b8ea7112aa19ac0e5233fd1df9f31379442 SHA-256: a2d53fe04140ce4f9fa95ef987a81876e10aff67d9b64d1d9f754c266387c607
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external websites, as indicated by the PDF_SEO_LINK_FARM heuristic. While the extracted URLs themselves are currently classified as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or to redirect users to malicious content. The ML_NYX_PDF_MALICIOUS classifier also flagged the document with high confidence.

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/5a08a08a02a02a00/White-Fang-By-Jack-London---Illustrated-And-Unabridged-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/7a05a04a06a07a09/White-Fang-Audiobook-With-Recommended-Collection-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/3a03a02a08a05/The-Call-of-the-Wild-White-Fang-and-Other-Stories-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/8a00a08a00a08a00/White-Fang-Annotated-Student-and-Teacher-Edition-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/3a03a05a01a08a00/The-Call-of-the-Wild-White-Fang-To-Build-a-Fire-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/1a01a05a08a04a01a00/White-Fang-ILLUSTRATED-designed-for-kindle-amp-illustrated-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/3a06a04a02a00a09/White-Fang-by-Clay-Stafford.pdf
    • http://muicuiu.dumb1.com/2a00a04a09a06a05/Snow-White-and-Rose-Red-The-Curse-of-the-Huntsman-by-Lilly-Fang.pdf
    • http://muicuiu.dumb1.com/3a04a07a00a03a04/The-Portable-Jack-London-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/1a02a08a02a03a01/The-Red-One-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/3a04a08a01a07/The-Sea-Wolf-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/4a03a01a06a03a01/The-Jacket-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/8a03a01a03a04a05/B-tard-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/1a00a02a04a05a05a06/War-of-the-Classes-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/2a02a05a07a09a03/The-Sea-Wolf-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/9a00a05a01a09a06/The-Call-of-the-Wild-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/6a01a03a09a04/The-Valley-of-the-Moon-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/2a01a01a01a02a03/To-Build-a-Fire-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/9a08a04a01a06a02/The-Call-of-the-Wild-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/6a05a02a02a06a00/The-Call-of-the-Wild-by-Jack-London.pdf

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