Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97f03fa72d3666f…

MALICIOUS

PDF

4.5 KB Created: 2015-06-03 16:38:26 +03:00 Authoring application: DOMPDF
MD5: c0164058fc3a0fd21be9c9d75a994de3 SHA-1: 3283b0109bf9b16ea20b88b45d135212d27d5006 SHA-256: e97f03fa72d3666f13b76da82b5ccf933fe29824c732afd8b03cdd74c0e0ef0e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains and appear to be part of a link farm strategy. The document body, while containing financial terms, also embeds these URLs, suggesting a deceptive purpose. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the file. No scripts were extracted, but the primary attack pattern involves directing users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5320

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.kbb-gesellschaft.de/index.php?2015/ergoarena.pdf&urggv=1&aspx=1360
    • http://www.kbb-gesellschaft.de/index.php?2015/ergoarena.pdf&urggv=1&aspx=1174
    • http://www.prequine.com/index.php?2015/torcida.pdf&fcldj=1&aspx=1151
    • http://www.prequine.com/index.php?2015/torcida.pdf&fcldj=1&aspx=1462
    • http://www.kbb-gesellschaft.de/index.php?2015/ergoarena.pdf&urggv=1&aspx=145
    • http://dyrlaegecentret.dk/index.php?2015/typestitch.pdf&hjhle=1&aspx=sitemap

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