Malicious PDF — malware analysis report

Static analysis result for SHA-256 e73431e1acc2ec60…

MALICIOUS

PDF

5.1 KB Created: 2015-06-03 16:37:58 +03:00 Authoring application: DOMPDF
MD5: 2973959e6740f10b43041a971492ba5e SHA-1: cb32bedfd1879342eacc02bab1766a4e5ad3cb17 SHA-256: e73431e1acc2ec600f3903d8c1e2a05ac93f26bba6b536c453f38fbb73c2fe31
60 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' directly indicates this behavior. The document body, while containing financial terms, is likely a lure to disguise the malicious intent of linking to numerous external resources.

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.prequine.com/index.php?2015/torcida.pdf&fcldj=1&aspx=593
    • http://www.nibl.co.nz/index.php?2015/decision.pdf&angzv=1&aspx=2463
    • http://www.nibl.co.nz/index.php?2015/decision.pdf&angzv=1&aspx=464
    • http://phcccolorado.org/index.php?2015/arabtera.pdf&effpp=1&aspx=2303
    • http://www.academiafutebolangola.com/index.php?2015/hmdeepfocus.pdf&audtr=1&aspx=785
    • http://dyrlaegecentret.dk/index.php?2015/typestitch.pdf&hjhle=1&aspx=sitemap

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