Malicious PDF — malware analysis report

Static analysis result for SHA-256 be7622314ba81e28…

MALICIOUS

PDF

32.3 KB Created: 2020-04-23 23:20:35 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 07d30cb912b0bcbd8674d844ad264812 SHA-1: 7c6722f510886f73c2d740dc457c12d4bd1344dc SHA-256: be7622314ba81e2836b51318237149829c3ffcdb1fb618de65d41b2c52959dfe
92 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used to redirect users to malicious websites. The 'PDF_SEO_LINK_FARM' heuristic indicates a large number of these links, suggesting an attempt to create a link farm for SEO manipulation or to host malicious content. The document body, though heavily obfuscated, contains references to legal forms, which serves as a lure. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9495

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://elevatedmarketingco.com/uploads/1/3/0/7/130776100/130776100.html#minnesota+attorney+general+form+990
    • http://amycourtenay.com/uploads/1/3/0/7/130740141/7ce9e93a0.pdf
    • http://horsesatmarlinhill.com/uploads/1/3/0/6/130620455/vuzapovokofuwi.pdf
    • http://presidentialonemedia.com/uploads/1/3/0/9/130968976/3228499.pdf
    • http://ipitcounsel.com/uploads/1/3/0/3/130313755/ce12a7d.pdf
    • http://trainingandsport.com/uploads/1/3/1/3/131380275/ruzijiwatonisojepa.pdf

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