Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a539b95357a4629…

MALICIOUS

PDF

33.6 KB Created: 2020-01-10 17:21:34 +03:00 Authoring application: PSCRIPT.DRV Version 4.0 (via Acrobat Distiller 3.01 for Windows)
MD5: 407dea9762883bf5491be55878188576 SHA-1: 56ca654dd51fe18002377b781760c5084ac7911d SHA-256: 4a539b95357a462983542ef661834b412d3a95ad05a799e3ed07dc00a8bc3e97
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external websites, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of links suggests a malicious intent, possibly for SEO manipulation or to redirect users to malicious content hosted on the linked domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8015

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/clinical-companion-study-guide-for-mosby-s-dental-hygiene-by.pdf
    • http://www.gorillawalker.com/a-history-of-development-economics-thought-challenges-and-counter-challenges.pdf
    • http://www.gorillawalker.com/language-and-context.pdf
    • http://www.gorillawalker.com/the-irish-in-newfoundland-1600-1900-their-trials-tribulations-and.pdf
    • http://www.gorillawalker.com/hope-chest-a-short-story-kindle-edition.pdf
    • http://www.gorillawalker.com/sat-subject-tests-chemistry-2005-2006-kaplan-sat-subject-tests.pdf
    • http://www.gorillawalker.com/gateway-access-code-instant-access-code-for-dato-diagnostic-scenarios.pdf
    • http://www.gorillawalker.com/mycomplab-with-pearson-etext-standalone-access-card-for-quick-access.pdf
    • http://www.gorillawalker.com/the-money-culture-kindle-edition.pdf
    • http://www.gorillawalker.com/1812-war-with-america.pdf
    • http://www.gorillawalker.com/the-iraq-war-and-democratic-politics.pdf
    • http://www.gorillawalker.com/plant-hunting-on-the-edge-of-the-world.pdf
    • http://www.gorillawalker.com/authentic-dare-to-be-real.pdf
    • http://www.gorillawalker.com/prayers-for-the-little-ones.pdf
    • http://www.gorillawalker.com/parakeets-for-dummies.pdf
    • http://www.gorillawalker.com/no-center-notes-on-the-haiku.pdf
    • http://www.gorillawalker.com/numerical-methods-for-stochastic-control-problems-in-continuous-time-stochastic.pdf
    • http://www.gorillawalker.com/claimed-by-the-vampire-billionaire.pdf
    • http://www.gorillawalker.com/heart-of-war-bloodlines.pdf
    • http://www.gorillawalker.com/sydney-resturant-bar-and-cafe-directory-kindle-edition.pdf
    • http://www.gorillawalker.com/101-answers-to-your-fertility-questions-dell-women-s-health.pdf
    • http://www.gorillawalker.com/surviving-the-fifth-force-kindle-edition.pdf
    • http://www.gorillawalker.com/the-mind-in-disorder-psychoanalytic-models-of-pathology.pdf
    • http://www.gorillawalker.com/beltane-the-smith-a-romance-of-the-greenwood.pdf
    • http://www.gorillawalker.com/adams-family-correspondence-vols-5-6-december-1784-december-1785.pdf
    • http://www.gorillawalker.com/americans-with-disabilities-act-handbook-volumes-1-3-1998-supplement.pdf
    • http://www.gorillawalker.com/clinical-laboratory-pearls.pdf
    • http://www.gorillawalker.com/double-jeopardy-gender-and-th-parkes-wiener-series-on-jewish.pdf
    • http://www.gorillawalker.com/iso-9568-1993-cinematography-background-acoustic-noise-levels-in-theatres.pdf
    • http://www.gorillawalker.com/u-s-national-debate-topic-2008-2009-alternative-energy-reference.pdf
    • http://www.gorillawalker.com/ged-prep-test-essential-vocabulary-flash-cards-cram-now-ged.pdf
    • http://www.gorillawalker.com/in-dreams.pdf
    • http://www.gorillawalker.com/grundkurs-analysis-2-differentiation-und-integration-in-mehreren-ver-nderlichen.pdf
    • http://www.gorillawalker.com/home-coming-reclaiming-and-championing-your-inner-child-abridged-audible.pdf
    • http://www.gorillawalker.com/enter-through-the-image-the-ancient-image-language-of-myth.pdf
    • http://www.gorillawalker.com/handbook-of-toxinology.pdf
    • http://www.gorillawalker.com/coming-to-colorado-colorado-heart-book-4-kindle-edition.pdf
    • http://www.gorillawalker.com/civilian-immunity-in-war.pdf
    • http://www.gorillawalker.com/all-shook-up-music-passion-and-politics.pdf
    • http://www.gorillawalker.com/practicing-sectarianism-in-mandate-lebanon-shi-sup-c-i-cemeteries.pdf
    • http://www.gorillawalker.com/the-mone
    • 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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