Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a3dccaad34bfbbb…

MALICIOUS

PDF

32.5 KB Created: 2020-02-13 15:03:18 +03:00 Authoring application: TeX (via pdfTeX-0.14f)
MD5: 595886b0cd77fc5c4b22f283de9cd838 SHA-1: e87d755071f88e2780928275f8e89f6a1b534dc9 SHA-256: 5a3dccaad34bfbbb2961a7eef7693efe57941b8ec9a8b9274e44c8bcc2a7ae62
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links 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 from this sample, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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/nfl-rush-zone-guardians-of-the-core-tpb.pdf
    • http://www.gorillawalker.com/the-mars-connection-how-the-red-planet-influences-the-stock.pdf
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    • http://www.gorillawalker.com/balada-when-death-did-not-exist-nor-yet-eternity-part.pdf
    • http://www.gorillawalker.com/clothes-long-ago-learn-abouts.pdf
    • http://www.gorillawalker.com/marine-scout-snipers-in-action-special-ops-ii.pdf
    • http://www.gorillawalker.com/college-algebra-and-trigonometry-seventh-edition-with-enhanced-webassign-access.pdf
    • http://www.gorillawalker.com/1994-ieee-nuclear-science-symposium.pdf
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    • http://www.gorillawalker.com/dreams-of-awakening-lucid-dreaming-and-mindfulness-of-dream-and.pdf
    • http://www.gorillawalker.com/bausteine-der-kindlichen-entwicklung-die-bedeutung-der-integration-der-sinne.pdf
    • http://www.gorillawalker.com/reprint-1963-yearbook-mead-high-school-spokane-washington.pdf
    • http://www.gorillawalker.com/interfacial-fluid-dynamics-and-transport-processes-lecture-notes-in-physics.pdf
    • http://www.gorillawalker.com/no-one-is-innocent-punk-art-style-revolt.pdf
    • http://www.gorillawalker.com/mucho-mojo-a-hap-and-leonard-novel-hap-and-leonard.pdf
    • http://www.gorillawalker.com/chrysalis-poems-of-release.pdf
    • http://www.gorillawalker.com/greece-blue-guides.pdf
    • http://www.gorillawalker.com/signs-of-belonging-luther-s-marks-of-the-church-and.pdf
    • http://www.gorillawalker.com/the-world-s-wit-and-humor-an-encyclopedia-of-the.pdf
    • http://www.gorillawalker.com/frommer-s-greece-frommer-s-complete-guides.pdf
    • http://www.gorillawalker.com/foundations-of-macroeconomics-6th-edition.pdf
    • http://www.gorillawalker.com/saudi-arabia-countries-in-the-news.pdf
    • http://www.gorillawalker.com/the-yage-letters-redux.pdf
    • http://www.gorillawalker.com/how-to-write-a-damn-good-novel-ii-advanced-techniques.pdf
    • http://www.gorillawalker.com/psychotropic-drug-directory-2010-the-professionals-pocket-handbook-and-aide.pdf
    • http://www.gorillawalker.com/physicians-healed.pdf
    • http://www.gorillawalker.com/divina-comedia-divine-comedy-spanish-edition.pdf
    • http://www.gorillawalker.com/the-apha-complete-review-for-pharmacy-10th-edition-gourley-apha.pdf
    • http://www.gorillawalker.com/the-white-ballets.pdf
    • http://www.gorillawalker.com/diagnosing-and-treating-mental-illness-encyclopedia-of-health.pdf
    • http://www.gorillawalker.com/electronic-keyboard-initial-2011-2013-trinity-electronic-keyboard-examination-pieces.pdf
    • http://www.gorillawalker.com/wildwood-wisdom-master-your-talent-for-wilderness-survival-wildwood-wildwood.pdf
    • http://www.gorillawalker.com/the-anti-emile-reflections-on-the-theory-and-practice-of.pdf
    • http://www.gorillawalker.com/riding-the-creative-rollercoaster-how-leaders-evoke-creativity-productivity-and.pdf
    • http://www.gorillawalker.com/the-rainbow-and-the-worm-the-physics-of-organisms-kindle.pdf
    • 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/

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