Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5953462800b5775…

MALICIOUS

PDF

31.0 KB Created: 2020-04-19 10:24:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d5925a625288216efd5f9bcb8fd61fcb SHA-1: 5b588e1e463e9f88e18fc9f9cd12e427e7ff6e74 SHA-256: e5953462800b57750c87cb5ab72941c5b1bf419143b7eb571f712939996cb396
92 Risk Score

Malware Insights

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

The PDF document contains numerous external links to other PDF files, a technique often used for SEO poisoning or to host malicious content. The document body mentions 'Vpn crack apk onhax', suggesting a lure for cracked software. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves redirecting users to potentially malicious content hosted on a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9716

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://plantdefender.net/uploads/1/3/0/3/130379111/130379111.html#vpn+crack+apk+onhax PDF link annotation
    • http://candcjunkremoval.com/uploads/1/3/0/4/130436094/xozikopefaluzusa.pdfIn PDF document text
    • http://gracefulriches.com/uploads/1/3/0/9/130969473/8909184.pdfIn PDF document text
    • http://ravenswoodleasing.com/uploads/1/3/0/6/130620375/malanapomabixoz.pdfIn PDF document text
    • http://ruedasdeinnovacion.com/uploads/1/3/0/9/130969648/wuranepizazedodadini.pdfIn PDF document text
    • http://watchrussia.net/uploads/1/3/1/6/131637430/5e95de9882.pdfIn PDF document text
    • http://thedougduren.com/uploads/1/3/1/3/131379230/6050701b0fad.pdfIn PDF document text

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