Malicious PDF — malware analysis report

Static analysis result for SHA-256 3200b3783c07aedb…

MALICIOUS

PDF

32.9 KB Created: 2020-05-06 06:17:44 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: abb876b8e6c1a27f58018f2490251d1f SHA-1: 9e35da3ec9f196cadcb751c80bd2bc48b6d25896 SHA-256: 3200b3783c07aedbae7f2f146360abdbbb52a0467023741cba2342fdc95b8262
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files hosted on similar domains. This pattern is indicative of a link farm or SEO spam campaign, designed to drive traffic to potentially malicious sites. The ML classifier strongly supports the malicious verdict. No scripts were extracted, limiting the ability to determine further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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://sentirhumano.org/uploads/1/3/1/1/131164504/131164504.html#where+does+android+studio+emulator+save+screenshots
    • http://bighousesscotborders.org/uploads/1/3/1/4/131452818/09d61e1390e138.pdf
    • http://saraadelehiggins.com/uploads/1/3/0/3/130379447/7da27369ebb29d1.pdf
    • http://cleverkidsconsultant.com/uploads/1/3/1/4/131437844/fegowofajidelozo.pdf
    • http://chemistrybybatz.com/uploads/1/3/0/5/130540453/tukujuvezupidep_jugagawo_sinowirijuleded_fexolu.pdf
    • http://kelownaacupuncture.ca/uploads/1/3/0/5/130539846/7fb59f5bea455a.pdf
    • http://jjscandy.com/uploads/1/3/0/3/130379252/vizurubofow-xijetigujanas-dezazobipu.pdf
    • http://jhanameditation.com/uploads/1/3/0/6/130620492/4269650.pdf
    • http://solidusphotography.com/uploads/1/3/0/6/130605044/bumase.pdf
    • http://honesthousecleaning.com/uploads/1/3/0/9/130969686/6829432.pdf
    • http://detailinggreensboro.com/uploads/1/3/0/7/130775806/9869215.pdf
    • http://eastcoastpropertysolutions.com/uploads/1/3/0/5/130546880/3744939.pdf

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