Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9b9f5f95866e32…

MALICIOUS

PDF

26.3 KB Created: 2020-04-10 20:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0c58517f7d96f0dc19deb0bfb47870f1 SHA-1: 49c26459d8e8ab6e2c03ab1fa00ed0195f4cc016 SHA-256: 2e9b9f5f95866e3248355d189f1756416aa3513363ee1170a5dc9597b1cf3c96
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a significant number of external links pointing to various domains, indicating a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs supports this assessment. The document body mentions 'Thor workout special forces' and includes metadata from wkhtmltopdf, suggesting a potential lure or obfuscation technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://chavemusic.com/uploads/1/3/0/8/130814676/130814676.html#thor+workout+special+forces
    • http://peachtreecornersdevsite.com/uploads/1/3/0/7/130738972/waporozos.pdf
    • http://krissyoneill.com/uploads/1/3/0/3/130323155/gebaxufupoku-zuzir-xizedozorenapas.pdf
    • http://borofest.org/uploads/1/3/0/5/130550716/9014099.pdf
    • http://chichestertherapy.com/uploads/1/3/1/3/131383754/6739813.pdf
    • http://weddingplannerhuwelijk.com/uploads/1/3/1/4/131453267/kalezibanogibedeza.pdf
    • http://unonova.com/uploads/1/3/0/8/130813400/mopudevev-zovorevafirunim-sitoxalobolivep.pdf
    • http://thebuildingsuperstore.net/uploads/1/3/0/6/130605244/paduxif-lapejep-naval.pdf
    • http://counsellearn.com/uploads/1/3/0/3/130323362/tojoxazewebo.pdf

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