Malicious PDF — malware analysis report

Static analysis result for SHA-256 917be0e96635ee54…

MALICIOUS

PDF

28.9 KB Created: 2020-04-18 16:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ce701c0ddd8b529e38774010a8244ad5 SHA-1: 084b67b58ad5fbc71c5964183442cd2b1c3ac54e SHA-256: 917be0e96635ee54ed166b8983c7ba893988ab83aab73b8ee91f0de7bb9d2836
92 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which point to other PDF files hosted on various domains. The document body, though partially corrupted, suggests a lure related to educational materials. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, a common tactic for SEO poisoning or distributing malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9197

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://powerofproton3.website/uploads/1/3/0/6/130639110/130639110.html#discovering+world+geography+mcgraw+hill+answer+key
    • http://lampessentials.com/uploads/1/3/1/4/131437379/wanavezuzut_bunom_lonezebiwimoge.pdf
    • http://heartlandgetaways.net/uploads/1/3/1/4/131483152/7509474.pdf
    • http://kcimeetings.com/uploads/1/3/0/5/130588256/8c0d9e6d.pdf
    • http://moses-balan.com/uploads/1/3/1/4/131406569/fd957ce28.pdf
    • http://womenssacredselfempowerment.com/uploads/1/3/1/6/131606782/sarijorumepi.pdf
    • http://perfectlystyledforyou.com/uploads/1/3/0/2/130291474/lakikudugek.pdf

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