Malicious PDF — malware analysis report

Static analysis result for SHA-256 840612e1450047aa…

MALICIOUS

PDF

44.0 KB Created: 2018-12-11 20:44:57 +03:00 Authoring application: QuarkXPress(tm) 6.1
MD5: 6f27a56e363915ebc2e3801f1a3e7666 SHA-1: 4ef412220d84a149bfcec606886e41789f526bb9 SHA-256: 840612e1450047aa42da7f5f88d517a5c57958270cf8934c8c3831e75e2d11e1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files on the 'gorillawalker.com' domain. This behavior is indicative of a link farm, potentially for SEO manipulation or to serve as a distribution point for further malicious content. While no scripts were explicitly extracted, the PDF structure and the sheer volume of external links suggest an attempt to redirect the user to potentially harmful resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8859

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-7278218-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7278218-0
  • 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/newdoku-vol-1-spanish-edition.pdf
    • http://www.gorillawalker.com/black-cat.pdf
    • http://www.gorillawalker.com/suite-in-a-minor.pdf
    • http://www.gorillawalker.com/going-west.pdf
    • http://www.gorillawalker.com/of-course-the-greatest-collection-of-riddles-brain-teasers-for.pdf
    • http://www.gorillawalker.com/cut-hollywood-murders-accidents-and-other-tragedies.pdf
    • http://www.gorillawalker.com/countdown-to-a-moon-launch-preparing-apollo-for-its-historic.pdf
    • http://www.gorillawalker.com/medical-informatics-practical-guide-for-healthcare-and-information-technology-professionals.pdf
    • http://www.gorillawalker.com/risk-based-tax-audits-approaches-and-country-experiences-directions-in.pdf
    • http://www.gorillawalker.com/affirmative-action-in-antidiscrimination-law-and-policy-an-overview-and.pdf
    • http://www.gorillawalker.com/biomedical-signal-and-image-processing.pdf
    • http://www.gorillawalker.com/awake-o-sleeper-advent-gathering-rite-for-choir-assembly-keyboard.pdf
    • http://www.gorillawalker.com/edith-wharton-s-women-friends-and-rivals.pdf
    • http://www.gorillawalker.com/amazing-spider-man-game-ultimate-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/the-physical-basis-of-thermodynamics-with-applications-to-chemistry.pdf
    • http://www.gorillawalker.com/como-dejar-de-comer-mal-spanish-edition.pdf
    • http://www.gorillawalker.com/php-for-absolute-beginners.pdf
    • http://www.gorillawalker.com/diabetes-cooking-for-everyone-250-all-natural-low-glycemic-recipes.pdf
    • http://www.gorillawalker.com/praxis-ii-elementary-education-content-knowledge-5018-exam-flashcard-study.pdf
    • http://www.gorillawalker.com/18-keyboard-sonatas.pdf
    • http://www.gorillawalker.com/for-those-who-cannot-speak-the-criminal-futility-of-war.pdf
    • http://www.gorillawalker.com/heave-ho-thomas-thomas-friends-a-golden-go-along-book.pdf
    • http://www.gorillawalker.com/sweet-stuff-karen-barker-s-american-desserts.pdf
    • http://www.gorillawalker.com/mile-high-futa-menage-bundle-a-futanari-menage-two-book.pdf
    • http://www.gorillawalker.com/faszien-in-sport-und-alltag-german-edition.pdf
    • http://www.gorillawalker.com/the-figino-or-on-the-purpose-of-painting-art-theory.pdf
    • http://www.gorillawalker.com/ruptures-orbital-vol-2.pdf
    • http://www.gorillawalker.com/the-bravest-rescue-puppy.pdf
    • http://www.gorillawalker.com/mini-meditations-for-lent-large-print-edition.pdf
    • http://www.gorillawalker.com/close-to-home-2008-wall-calendar.pdf
    • http://www.gorillawalker.com/the-daughter-s-secret.pdf
    • http://www.gorillawalker.com/stargirl-love-stargirl-paperback-box-set.pdf
    • http://www.gorillawalker.com/christian-theology-volume-3.pdf
    • http://www.gorillawalker.com/scientific-american-supplement-no-315-january-14-1882-kindle-edition.pdf
    • http://www.gorillawalker.com/texas-hold-em-poker-textbook.pdf
    • http://www.gorillawalker.com/the-world-of-russian-borsch.pdf
    • http://www.gorillawalker.com/of-brigands-and-bravery-kuniyoshi-s-heroes-of-the-suikoden.pdf
    • http://www.gorillawalker.com/supervision-of-sewers-for-adoption-ciria-report.pdf
    • http://www.gorillawalker.com/advances-in-the-characterization-of-industrial-minerals-emu-notes-in.pdf
    • http://www.gorillawalker.com/oops-trans-hookup-by-mistake-trans-erotica-bicurious-man-kindle.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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