Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b777bdd130f318…

MALICIOUS

PDF

42.9 KB Created: 2018-11-14 23:30:21 +03:00 Authoring application: Adobe Acrobat 7.0 (via Adobe Acrobat 7.0 Image Conversion Plug-in)
MD5: 326618d6a98e689f08f6995ecf66d528 SHA-1: 40cca4c1c8053fc8fb9d2b97e839520187aa56f5 SHA-256: b0b777bdd130f3185105b0621e86fd1971eb350adfc4cc0c7e8c5d951ea10422
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to external PDF files on the same domain, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests the document is part of an SEO manipulation scheme or a link farm designed to drive traffic to potentially malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

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/glitter-and-grit-lonesome-point-texas-volume-4.pdf
    • http://www.gorillawalker.com/skoldo-elementary-french-teacher-s-handbook-skoldo-primary-language.pdf
    • http://www.gorillawalker.com/windows-10-for-dummies-for-dummies-computers.pdf
    • http://www.gorillawalker.com/la-nvi-experiencia-viva-los-evangelios-audio-cd-spanish-edition.pdf
    • http://www.gorillawalker.com/the-priority-of-prudence-virtue-and-natural-law-in-thomas.pdf
    • http://www.gorillawalker.com/karstj-ger-guerilla-and-anti-guerrilla-in-ozah-1942-1945.pdf
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    • http://www.gorillawalker.com/revista-antenna-eletronica-popular-anep-ref-1205-2007-portuguese-edition.pdf
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    • http://www.gorillawalke
    • 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://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#
    • http://www.aiim.org/pdfa/ns/id/