Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1bd876a04d17d4c…

MALICIOUS

PDF

4.7 KB Created: 2015-06-03 16:40:11 +03:00 Authoring application: DOMPDF
MD5: aaa60d773f8567d5f31236738eb57038 SHA-1: 9c19046cb8ad209ba1957988aadc91b16d9eb351 SHA-256: b1bd876a04d17d4cc1dcef445f1e294280556720ff25b7372299b2541b17b106
60 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body is filled with text related to day trading and stock market terms, likely as a lure to make the links appear more relevant. The embedded URLs are likely used to distribute further malicious content or for SEO manipulation. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier clean score 0.1457

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=1318
    • http://www.nibl.co.nz/index.php?2015/decision.pdf&angzv=1&aspx=1210
    • http://www.kbb-gesellschaft.de/index.php?2015/ergoarena.pdf&urggv=1&aspx=2319
    • http://phcccolorado.org/index.php?2015/arabtera.pdf&effpp=1&aspx=2385
    • http://www.prequine.com/index.php?2015/torcida.pdf&fcldj=1&aspx=8
    • http://dyrlaegecentret.dk/index.php?2015/typestitch.pdf&hjhle=1&aspx=sitemap

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