Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac994537ffa13f08…

MALICIOUS

PDF

33.1 KB Created: 2019-07-20 19:40:32 +03:00 Authoring application: Adobe InDesign CS3 (5.0) (via Adobe PDF Library 8.0)
MD5: ae836ffe04b8faacb2c6fe7a0d5fed86 SHA-1: cb71d6238e879fd995a6052de02daab48cf1d642 SHA-256: ac994537ffa13f082cfc458d33cf14eedce51edba2266708a2b3c2634fe8a56b
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including ClamAV and a machine learning classifier, indicating malicious intent. The 'PDF_SEO_LINK_FARM' heuristic specifically identified a large number of external links pointing to URLs hosted on 'www.gorillawalker.com'. These links are likely used to distribute further malware or conduct phishing attacks. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8313

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7112135-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7112135-0
  • 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/penguin-sudoku-2013-365-brand-new-sudoku-for-every-day.pdf
    • http://www.gorillawalker.com/the-church-in-china-interface-a-forum-for-theology-in.pdf
    • http://www.gorillawalker.com/ocho-decisiones-sanadoras-life-s-healing-choices-liberese-de-sus.pdf
    • http://www.gorillawalker.com/the-eternal-life-insurance-racket-an-expose.pdf
    • http://www.gorillawalker.com/analytic-elements-in-p-adic-analysis.pdf
    • http://www.gorillawalker.com/bitcoin-2-0-the-complete-bitcoin-step-by-step-guide.pdf
    • http://www.gorillawalker.com/then-sings-my-soul-reflections-for-piano-solo-skill-moderately.pdf
    • http://www.gorillawalker.com/report-of-the-state-of-maryland-gettysburg-monument-commission-to.pdf
    • http://www.gorillawalker.com/the-battle-of-versailles-the-night-american-fashion-stumbled-into.pdf
    • http://www.gorillawalker.com/the-new-cancer-survivors-living-with-grace-fighting-with-spirit.pdf
    • http://www.gorillawalker.com/sunshine-wound.pdf
    • http://www.gorillawalker.com/field-guide-to-the-mosses-and-allied-plants-of-southern.pdf
    • http://www.gorillawalker.com/pashto-to-english-dictionary-a-modern-dictionary-of-the-pakhto.pdf
    • http://www.gorillawalker.com/coup-d-etat-a-dewey-andreas-novel.pdf
    • http://www.gorillawalker.com/sharks-keep-losing-their-teeth-i-didn-t-know-that.pdf
    • http://www.gorillawalker.com/foods-of-the-world-the-cooking-of-vienna-s-empire.pdf
    • http://www.gorillawalker.com/deixis-in-narrative-a-cognitive-science-perspective.pdf
    • http://www.gorillawalker.com/school-for-husbands-and-the-imaginary-cuckold-or-sganarelle.pdf
    • http://www.gorillawalker.com/a-short-manual-of-comparative-philology-for-classical-students-cambridge.pdf
    • http://www.gorillawalker.com/expanded-present-radix-methods-and-secondary-progressions-the-principles-and.pdf
    • http://www.gorillawalker.com/french-picture-word-book.pdf
    • http://www.gorillawalker.com/unrolling-time-christiaan-huygens-and-the-mathematization-of-nature.pdf
    • http://www.gorillawalker.com/scholastic-reader-level-1-biggety-bat-chow-down-biggety.pdf
    • http://www.gorillawalker.com/boyfriend-from-hell-saturn-s-daughter.pdf
    • http://www.gorillawalker.com/never-somewhere-else.pdf
    • http://www.gorillawalker.com/a-comparative-study-of-the-corporate-bankruptcy-reorganization-law-of.pdf
    • http://www.gorillawalker.com/fatal-cure.pdf
    • http://www.gorillawalker.com/managing-india-s-nuclear-forces.pdf
    • http://www.gorillawalker.com/teaching-children-to-pray-ages-2-3.pdf
    • http://www.gorillawalker.com/sex-and-the-disabled-a-sexual-manifesto-and-practical-sex.pdf
    • http://www.gorillawalker.com/the-ruby-talisman.pdf
    • http://www.gorillawalker.com/the-complete-idiot-s-guide-to-starting-an-online-business.pdf
    • http://www.gorillawalker.com/lange-pharmacology-flash-cards-2nd-second-edition.pdf
    • http://www.gorillawalker.com/easy-spanish-step-by-step.pdf
    • http://www.gorillawalker.com/introductory-econometrics.pdf
    • http://www.gorillawalker.com/austria-charming-small-hotel-guides-charming-small-hotel-guides.pdf
    • http://www.gorillawalker.com/lighting-handbook-reference-application-illuminating-engineering-society-of-north-america.pdf
    • http://www.gorillawalker.com/multimodality-and-cognitive-linguistics-benjamins-current-topics.pdf
    • http://www.gorillawalker.com/plain-folk-and-gentry-in-a-slave-society-white-liberty.pdf
    • http://www.gorillawalker.com/alleviation-of-poverty-and-unemployment-programme-s-problems-and-prospects.pdf
    • http://www.gorillaw
    • 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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