Malicious PDF — malware analysis report

Static analysis result for SHA-256 2044f9a510c9b341…

MALICIOUS

PDF

42.9 KB Created: 2018-11-26 20:03:15 +03:00 Authoring application: Adobe PageMaker 7.0 (via Acrobat Distiller 5.0.5 (Windows))
MD5: 389595d91caf617f649df14928bf7d31 SHA-1: b94b4032d7e99aa73066880a566b7bc629a1ec6d SHA-256: 2044f9a510c9b341da0d07d71a241c6c4f7b07c6a13ac469399b12d9c6909498
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of external links to PDF files on the domain www.gorillawalker.com. This suggests a link farm or SEO poisoning attack, potentially distributing malicious content or leading users to phishing sites. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the direct user-facing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/the-gun-digest-book-of-shotgunning.pdf
    • http://www.gorillawalker.com/the-support-of-breastfeeding-module-1-lactation-specialists-self-study.pdf
    • http://www.gorillawalker.com/hunter-s-tropical-medicine-and-emerging-infectious-disease-9ed-hb.pdf
    • http://www.gorillawalker.com/thomas-guide-2003-riverside-and-san-diego-counties-street-including.pdf
    • http://www.gorillawalker.com/soft-tip-darts-for-the-new-player-a-quiver-of.pdf
    • http://www.gorillawalker.com/canada-s-first-nations-a-history-of-founding-peoples-from.pdf
    • http://www.gorillawalker.com/consuming-habits-drugs-in-history-and-anthropology-kindle-edition.pdf
    • http://www.gorillawalker.com/microbiologia-degli-alimenti-food-italian-edition.pdf
    • http://www.gorillawalker.com/the-fourth-turning-an-american-prophecy-what-the-cycles-of.pdf
    • http://www.gorillawalker.com/the-co-creation-paradigm.pdf
    • http://www.gorillawalker.com/bmw-precision-and-performance.pdf
    • http://www.gorillawalker.com/authentic-interpretation-in-canon-law-reflexions-on-a-distinctively-canonical.pdf
    • http://www.gorillawalker.com/explanation-and-teleology-in-aristotle-s-science-of-nature.pdf
    • http://www.gorillawalker.com/schizo-4.pdf
    • http://www.gorillawalker.com/ted-and-tim-the-sound-of-t-sounds-of-phonics.pdf
    • http://www.gorillawalker.com/industrial-pneumatic-technology-bulletin-0275-b1.pdf
    • http://www.gorillawalker.com/combustion-aerodynamics.pdf
    • http://www.gorillawalker.com/ain-t-too-proud-to-beg-the-troubled-lives-and.pdf
    • http://www.gorillawalker.com/the-journey-of-a-motherless-child-a-search-for-god.pdf
    • http://www.gorillawalker.com/aaron-henry-of-mississippi-inside-agitator.pdf
    • http://www.gorillawalker.com/arte-para-ni-os-con-6-grandes-artistas-mi-primer.pdf
    • http://www.gorillawalker.com/the-fallen-series-4-book-collection-kindle-edition.pdf
    • http://www.gorillawalker.com/all-hearts-don-t-break-even.pdf
    • http://www.gorillawalker.com/sacred-obsession.pdf
    • http://www.gorillawalker.com/how-horses-learn-which-training-methods-work-and-why.pdf
    • http://www.gorillawalker.com/high-heels-and-lipstick-deep-secrets-and-hope-book-3.pdf
    • http://www.gorillawalker.com/pankration-the-ultimate-game.pdf
    • http://www.gorillawalker.com/folk-tales-of-egypt-tales-from-egypt-the-arab-world.pdf
    • http://www.gorillawalker.com/hair-loss-cure-a-step-by-step-guide-to-overcome.pdf
    • http://www.gorillawalker.com/angelomorphic-pneumatology-supplements-to-vigiliae-christianae.pdf
    • http://www.gorillawalker.com/woman-alone-on-the-oregon-trail-god-is-my-only.pdf
    • http://www.gorillawalker.com/plants-have-so-much-to-give-us-all-we-have.pdf
    • http://www.gorillawalker.com/prefaces-to-unwritten-works.pdf
    • http://www.gorillawalker.com/juicing-liz-earle-s-quick-guides-liz-earle-s-quick.pdf
    • http://www.gorillawalker.com/die-rechtsnatur-pr-sidialer-gesch-ftsverteilungspl-ne-gem-21-e.pdf
    • http://www.gorillawalker.com/adolescent-substance-abuse-evidence-based-approaches-to-prevention-and-treatment.pdf
    • http://www.gorillawalker.com/nietzsche.pdf
    • http://www.gorillawalker.com/der-h-ndler-sammelband-2-in-guten-wie-in-schlechten.pdf
    • http://www.gorillawalker.com/activities-for-including-children-with-behavioural-difficulties-special-needs-in.pdf
    • http://www.gorillawalker.com/the-hip-girl-s-guide-to-homemaking-decorating-dining-and.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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