Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e4be53c8d06d22…

MALICIOUS

PDF

34.6 KB Created: 2020-03-12 17:17:35 +03:00 Authoring application: Adobe InDesign CS5 (7.0.4) (via Adobe PDF Library 9.9)
MD5: 8b18cfa31256ed151ca567addd3b0e30 SHA-1: ba2d6d325dacb310d15c1ff33a4039b56121d750 SHA-256: 52e4be53c8d06d22949a4a57debbaf1deaec55482d100adf8f54114eeaa73121
60 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, specifically 32, all pointing to PDFs on the same domain (www.gorillawalker.com). This behavior is characteristic of a link farm, often used for SEO manipulation or to distribute potentially malicious content. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact nature of the lure beyond the link farm. The primary attack pattern involves directing users to external resources via embedded links.

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-anatomy-of-letters.pdf
    • http://www.gorillawalker.com/cinderella-and-other-stories-collins-classics.pdf
    • http://www.gorillawalker.com/executive-roadmap-to-fraud-prevention-and-internal-controls-creating-a.pdf
    • http://www.gorillawalker.com/louisa-may-and-mr-thoreau-s-flute.pdf
    • http://www.gorillawalker.com/shakespeare-for-one-women-the-complete-monologues-and-audition-pieces.pdf
    • http://www.gorillawalker.com/south-africa-1948-1994-cambridge-history-programme-key-stage-4.pdf
    • http://www.gorillawalker.com/the-secret-history-of-the-mongols-the-life-and-times.pdf
    • http://www.gorillawalker.com/a-brief-history-of-the-sacraments-baptism-and-communion.pdf
    • http://www.gorillawalker.com/introduction-to-applied-statistical-signal-analysis-third-edition-guide-to.pdf
    • http://www.gorillawalker.com/d-day-to-victory-the-diaries-of-a-british-tank.pdf
    • http://www.gorillawalker.com/trauermusik-music-of-mourning-viola.pdf
    • http://www.gorillawalker.com/guinness-book-of-badminton.pdf
    • http://www.gorillawalker.com/the-snow-white-christmas-cookie-a-berger-and-mitry-mystery.pdf
    • http://www.gorillawalker.com/the-dizzy-gillespie-collection-trumpet-artist-transcriptions.pdf
    • http://www.gorillawalker.com/teacher-anne-sullivan-macy-a-tribute-by-the-foster-child.pdf
    • http://www.gorillawalker.com/naked-reflections.pdf
    • http://www.gorillawalker.com/triple-cross-triple-trouble-7-siren-publishing-menage-everlasting-triple.pdf
    • http://www.gorillawalker.com/algeria-tunisia-michelin-national-maps.pdf
    • http://www.gorillawalker.com/the-hidden-shame-of-the-church-sexual-abuse-of-children.pdf
    • http://www.gorillawalker.com/deep-vein-thrombosis-and-pulmonary-embolism-a-guide-for-practitioners.pdf
    • http://www.gorillawalker.com/the-rolling-stone-film-reader-the-best-film-writing-from.pdf
    • http://www.gorillawalker.com/itf-advanced-coaches-manual.pdf
    • http://www.gorillawalker.com/lost-and-found-astonishing-headlines.pdf
    • http://www.gorillawalker.com/grilling-recipes-for-a-flat-belly-and-raw-recipes-for.pdf
    • http://www.gorillawalker.com/the-chip-how-two-americans-invented-the-microchip-and-launched.pdf
    • http://www.gorillawalker.com/financial-accounting-reporting-and-analysis-7th-edition.pdf
    • http://www.gorillawalker.com/blood-passage-dark-caravan-cycle.pdf
    • http://www.gorillawalker.com/virgil-the-aeneid-landmarks-of-world-literature.pdf
    • http://www.gorillawalker.com/kakurenbo-or-the-whereabouts-of-zen-priest-ryokan.pdf
    • http://www.gorillawalker.com/fire-inspector-s-guide-based-on-the-2006-international-fire.pdf
    • http://www.gorillawalker.com/get-rid-of-your-accent-for-business-the-english-pronunciation.pdf
    • http://www.gorillawalker.com/integrated-library-systems-for-pcs-and-pc-networks-descriptive-and.pdf
    • http://www.gorillawalker.com/a-shred-of-hope.pdf
    • http://www.gorillawalker.com/winning-library-grants-a-game-plan.pdf
    • http://www.gorillawalker.com/the-cheating-of-america-how-tax-avoidance-and-evasion-by.pdf
    • http://www.gorillawalker.com/deep-vein-thrombosis-travel-plus-500-free-us-military-manuals.pdf
    • http://www.gorillawalker.com/acting-with-your-eyes-on-camera-eye-phrasing.pdf
    • http://www.gorillawalker.com/counseling-children-8th-edition.pdf
    • http://www.gorillawalker.com/the-industrialization-of-soviet-russia-the-socialist-offensive-the-industrialisation.pdf
    • http://www.gorillawalker.com/soldiers-tale-bearing-witness-to-modern.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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