Malicious PDF — malware analysis report

Static analysis result for SHA-256 d553fe8ddf6e5ee2…

MALICIOUS

PDF

5.0 KB Created: 2015-06-03 16:37:42 +03:00 Authoring application: DOMPDF
MD5: 36327c915be463c872b729158761e990 SHA-1: 6acc1dbacb4879b5a35ca133a32471ef8e61e9fd SHA-256: d553fe8ddf6e5ee29ecf4aaf94dca75ec1bd318b82693dfae454b3287e0139aa
60 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating a link farm with numerous external URLs. The document body also contains these URLs, suggesting the primary purpose is to direct users to these external sites. The nature of these links, often disguised as PDF files with query parameters, points towards SEO manipulation or a distribution vector for further malicious activity.

Machine Learning

  • Nyx PDF Classifier clean score 0.1330

Heuristics 2

  • 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.
  • 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://www.nibl.co.nz/index.php?2015/decision.pdf&angzv=1&aspx=831
    • http://www.prequine.com/index.php?2015/torcida.pdf&fcldj=1&aspx=2353
    • http://www.nibl.co.nz/index.php?2015/decision.pdf&angzv=1&aspx=2139
    • http://phcccolorado.org/index.php?2015/arabtera.pdf&effpp=1&aspx=2098
    • http://www.kbb-gesellschaft.de/index.php?2015/ergoarena.pdf&urggv=1&aspx=1348
    • http://dyrlaegecentret.dk/index.php?2015/typestitch.pdf&hjhle=1&aspx=sitemap

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