Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd792eb7db67ce71…

MALICIOUS

PDF

4.8 KB Created: 2015-06-03 16:38:56 +03:00 Authoring application: DOMPDF
MD5: a911e4a24aa101955cff79390bb4d526 SHA-1: c8744499a38c3ff6e7db5f46cc124eb69629c520 SHA-256: bd792eb7db67ce71b8340eeed308a6092a3988a062c548a5ac6da0d15487e78b
60 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. These URLs point to various domains and appear to be part of a link farm. The document body, though truncated, also contains these URLs and text related to investment options, suggesting a lure to external content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier clean score 0.1434

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.prequine.com/index.php?2015/torcida.pdf&fcldj=1&aspx=2218
    • http://phcccolorado.org/index.php?2015/arabtera.pdf&effpp=1&aspx=748
    • http://www.academiafutebolangola.com/index.php?2015/hmdeepfocus.pdf&audtr=1&aspx=2082
    • http://www.nibl.co.nz/index.php?2015/decision.pdf&angzv=1&aspx=2354
    • http://www.nibl.co.nz/index.php?2015/decision.pdf&angzv=1&aspx=1520
    • http://dyrlaegecentret.dk/index.php?2015/typestitch.pdf&hjhle=1&aspx=sitemap

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