Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f9538535009ea1…

MALICIOUS

PDF

35.6 KB Created: 2020-04-20 07:43:49 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9a9d8c2abc406849d2c0f4f47f28f6bc SHA-1: 7238cfbcd206005e4c91d5ef2d509ef003b60324 SHA-256: e0f9538535009ea15d151a26ff7e3a93dddc4c1bda76f24ba4b87810c361b458
92 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with numerous URLs pointing to other PDFs. The primary lure appears to be a song title, directing users to a specific URL. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a SEO-based link farm designed to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9883

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://johnsonandsonsservices.com/uploads/1/3/1/4/131408100/131408100.html#theeratha+vilayattu+pillai+song++in+masstamilan
    • http://zadua.net/uploads/1/3/0/5/130542971/daa128a2f24ec5.pdf
    • http://709studios.com/uploads/1/3/1/4/131437655/b92ab61442.pdf
    • http://edwardecker.studio/uploads/1/3/0/6/130621865/vofutifajogufofem.pdf
    • http://edcmagnets.com/uploads/1/3/1/3/131380292/879d7c07a288.pdf
    • http://beyondimpossible.org/uploads/1/3/0/4/130435839/mebamufo-rukivojuw-rezuzav-juxegerurukuxi.pdf
    • http://mooreandhorseford.com/uploads/1/3/0/6/130621626/9199566.pdf
    • http://positivelyprego.com/uploads/1/3/0/4/130488228/6286981.pdf
    • http://myaj-gen.com/uploads/1/3/1/4/131438642/makegukifun.pdf
    • http://nextripchile.com/uploads/1/3/1/6/131636575/kegal.pdf
    • http://wispaworldwide.com/uploads/1/3/1/4/131407406/206823.pdf
    • http://thedozerguys.com/uploads/1/3/0/5/130539837/cade6b37f93e12.pdf