Malicious PDF — malware analysis report

Static analysis result for SHA-256 c47f899d4d584e56…

MALICIOUS

PDF

26.3 KB Created: 2020-04-18 00:07:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c062ad7f4e6de108c5bac43480d9ae48 SHA-1: 606805ac1b3a8c77e4b6d078dd61c4ad555d38f2 SHA-256: c47f899d4d584e567171c6bbbcd02cf54ae68acda2753da9bd413706de25d890
92 Risk Score

Malware Insights

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

The PDF contains numerous external links, many with numeric slugs, indicative of a link farm or SEO spamming technique. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to 'Final Fantasy XV Prima Guide PDF' and the authoring application 'wkhtmltopdf', suggesting a lure to a potentially malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9485

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://primeholisticoc.com/uploads/1/3/0/8/130814900/130814900.html#final+fantasy+xv+prima+guide+pdf
    • http://success4uwith-pam997sales.com/uploads/1/3/0/4/130493143/mawasuferiza-parozakid.pdf
    • http://ourfoodture.com/uploads/1/3/1/6/131637527/7718437.pdf
    • http://desertdetailers.com/uploads/1/3/0/7/130775972/siruta-luvoverotudu-lepiroxenume-kogixetiziv.pdf
    • http://soulstenance.net/uploads/1/3/1/3/131380868/fc8e259c0bf.pdf
    • http://wellnessedu.online/uploads/1/3/0/6/130604321/limukerefa_mewugu_rivematoled.pdf
    • http://oneagleswingsvic.com/uploads/1/3/0/6/130639747/a1a554b4d0a.pdf
    • http://divorcecoachingandconsulting.com/uploads/1/3/0/8/130814596/5513097.pdf

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