Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd81f966220918e…

MALICIOUS

PDF

5.0 KB Created: 2015-06-03 16:37:33 +03:00 Authoring application: DOMPDF
MD5: d98d45a800a06b92963f85e2c4e11832 SHA-1: 9ba32fc5bdbdcdb0b6e2ad426b5b97f5aab6538a SHA-256: 1dd81f966220918e91c427a2232e8956aff1fb984a276c34109521b78e08e0be
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. The document body is filled with keyword-stuffed text related to stock trading, which, combined with the numerous external links, suggests a tactic to manipulate search engine rankings or to distribute malicious content through seemingly legitimate-looking links. No scripts were extracted from this sample.

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.kbb-gesellschaft.de/index.php?2015/ergoarena.pdf&urggv=1&aspx=2035
    • http://www.kbb-gesellschaft.de/index.php?2015/ergoarena.pdf&urggv=1&aspx=972
    • http://www.prequine.com/index.php?2015/torcida.pdf&fcldj=1&aspx=363
    • http://phcccolorado.org/index.php?2015/arabtera.pdf&effpp=1&aspx=847
    • http://www.prequine.com/index.php?2015/torcida.pdf&fcldj=1&aspx=591
    • http://dyrlaegecentret.dk/index.php?2015/typestitch.pdf&hjhle=1&aspx=sitemap