Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5bc06a94a9ce83e…

MALICIOUS

PDF

41.6 KB Created: 2019-04-07 18:02:37 +03:00 Authoring application: Word (via Acrobat PDFMaker 15 for Word)
MD5: 7d8044b09836c342906cf62101f67016 SHA-1: b55c72e4042e13ce9b5985e9b6131519be73408c SHA-256: e5bc06a94a9ce83ea4c8db984d8210d6d6868130ee1cecf1af2cf8f1c06c3917
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files on the domain 'gorillawalker.com'. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a more detailed analysis of the immediate user-facing lure.

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/evernote-evernote-cracked-the-beginners-guide-on-how-to-master.pdf
    • http://www.gorillawalker.com/love-after-innocence.pdf
    • http://www.gorillawalker.com/lo-strano-mistero-dell-orient-express-enewton-narrativa-italian-edition.pdf
    • http://www.gorillawalker.com/the-heritage-of-italian-cooking.pdf
    • http://www.gorillawalker.com/a-colony-of-girls.pdf
    • http://www.gorillawalker.com/criar-con-apego-spanish-edition.pdf
    • http://www.gorillawalker.com/cry-from-the-deep-the-sinking-of-the-kursk-the.pdf
    • http://www.gorillawalker.com/the-visual-effects-arsenal-vfx-solutions-for-the-independent-filmmaker.pdf
    • http://www.gorillawalker.com/hadji-murat-russian-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/physical-examination-for-the-spine-and-extremities.pdf
    • http://www.gorillawalker.com/mine-tonight-the-blue-dynasty.pdf
    • http://www.gorillawalker.com/revolution-history-news-gareth-stevens.pdf
    • http://www.gorillawalker.com/the-ancient-reality-teachings-perfect-knowledge-series.pdf
    • http://www.gorillawalker.com/the-tiniest-mansion-how-to-live-in-luxury-on-the.pdf
    • http://www.gorillawalker.com/economics-for-cambridge-igcse-first-edition.pdf
    • http://www.gorillawalker.com/engineering-and-construction-short-subcontract-nec.pdf
    • http://www.gorillawalker.com/clear-and-present-danger-brilliance-audio-on-compact-disc.pdf
    • http://www.gorillawalker.com/parallel-lives-of-jesus-a-guide-to-the-four-gospels.pdf
    • http://www.gorillawalker.com/political-obligations.pdf
    • http://www.gorillawalker.com/28-kinds-of-clever-use-of-salt-i-want-to.pdf
    • http://www.gorillawalker.com/raindrops-a-shower-of-colors.pdf
    • http://www.gorillawalker.com/one-day-crocheting-projects-part-ii-15-more-fun-quick.pdf
    • http://www.gorillawalker.com/holt-mcdougal-modern-chemistry-texas-student-edition-2015.pdf
    • http://www.gorillawalker.com/my-math-grade-3.pdf
    • http://www.gorillawalker.com/graphic-design-process-from-problem-to-solution-20-case-studies.pdf
    • http://www.gorillawalker.com/last-stand-of-chinese-conservatism-the-t-ng-chih-restoration.pdf
    • http://www.gorillawalker.com/hungary-people-to-people-guides-for-the-real-traveler.pdf
    • http://www.gorillawalker.com/the-music-of-fantasy-cinema-genre-music-and-sound.pdf
    • http://www.gorillawalker.com/reckless-the-thoughtless-trilogy-book-3-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/cells-to-civilizations-the-principles-of-change-that-shape-life.pdf
    • http://www.gorillawalker.com/reforming-international-institutions-another-world-is-possible.pdf
    • http://www.gorillawalker.com/atlas-of-primary-care-procedures.pdf
    • http://www.gorillawalker.com/prehistoric-worlds-an-interactive-book-with-tabs-folds-flaps-acetates.pdf
    • http://www.gorillawalker.com/blake-et-mortimer-english-version-volume-19-the-time-trap.pdf
    • http://www.gorillawalker.com/the-eurasian.pdf
    • http://www.gorillawalker.com/an-arctic-tundra-food-chain-odysseys-in-nature.pdf
    • http://www.gorillawalker.com/blade-fighting-back.pdf
    • http://www.gorillawalker.com/the-denial-of-death.pdf
    • http://www.gorillawalker.com/home-guide-to-plumbing-heating-air-conditioning.pdf
    • http://www.gorillawalker.com/the-psychopharmacology-primer-a-guide-to-understanding-the-use-of.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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