Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fabbb15e156d49f…

MALICIOUS

PDF

39.9 KB Created: 2018-12-15 20:00:49 +03:00 Authoring application: DVIPSONE 2.2.4 http://www.YandY.com (via Acrobat Distiller 7.0.5 (Windows))
MD5: 7818b2655bc2d29d67c5824b95c18a0b SHA-1: 7efb6c3cf45cec9b09609906275e50732c838d20 SHA-256: 2fabbb15e156d49f6a4d6798dd650de204f91ae84715cca98e67f518d20a7189
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was unreadable, limiting the ability to determine the exact payload or user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8856

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.gorillawalker.com/elephant-wild-things.pdf
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    • http://www.gori
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://www.YandY.com
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    +1 more URL(s)

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