Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc474bbc9aa15c9d…

MALICIOUS

PDF

15.5 KB Created: 2019-04-30 04:25:32 +01:00 Authoring application: mPDF 5.7
MD5: 6535d6232ddcf0623470d8ba2c1c168d SHA-1: 2908b47ffd3a50b8df37cc2d49d5ecb2751b42a3 SHA-256: fc474bbc9aa15c9d49f51a7d7d2a72871efa92f795b3e6444766fa66751e7442
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm. No scripts were extracted from this sample, limiting the ability to determine a specific payload delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/6a09a01a03a03/The-Tales-and-Poems-of-Edgar-Allan-Poe-Complete-Works-Collection-Annotated-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/1a09a01a03a03a09/The-Complete-Works-of-Edgar-Allan-Poe-Illustrated-Inline-Footnotes-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/6a02a03a08a05a02/The-Works-of-Edgar-Allan-Poe-The-Raven-Edition-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/6a00a09a06a01a09/Edgar-Allan-Poe-Complete-Tales-amp-Poems-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/1a09a00a02a06a07/The-Complete-Works-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/6a02a03a08a05a01/The-Works-of-Edgar-Allan-Poe-Volume-4-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/6a02a03a08a05a06/The-Collected-Works-of-Edgar-Allan-Poe-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/6a07a07a07a01a00/The-Complete-Works-Tales-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/1a01a04a01a00a08a00/Complete-Poems-of-Edgar-Allan-Poe-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/6a08a08a06a05a04/Kingdom-By-The-Sea-Edgar-Allan-Poe-s-Charleston-Tales-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/8a09a03a03a01a08/Edgar-Allan-Poe-s-15-Illustrated-Poems-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/2a08a05a04a06a04/The-Edgar-Allan-Poe-Audio-Collection-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/4a05a07a08a07a07/Edgar-Allan-Poe-s-Annotated-Poems-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/2a01a04a06a03a05/Great-Short-Works-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/9a00a06a09a04/Complete-Poems-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/4a08a02a06a08a06/The-Complete-Tales-and-Poems-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/3a02a01a02a08/The-Complete-Stories-and-Poems-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/3a08a04a00a09/Tales-of-Edgar-Allan-Poe-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/6a02a03a07a09a00/Edgar-Allan-Poe-Stories-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/5a04a08a03a00/Poems-of-Edgar-Allan-Poe-by-Edgar-Allan-Poe.pdf
    • http://muicuiu.dumb1.com/6a02a03a08a05a06/The-Collected-Works-of-Edgar-Allan-Poe-by-Edgar-

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