Malicious PDF — malware analysis report

Static analysis result for SHA-256 271d4e8fdfe3048f…

MALICIOUS

PDF

42.8 KB Created: 2018-12-14 21:27:10 +03:00 Authoring application: Acrobat 5.0 Image Conversion Plug-in for Windows
MD5: d82b379686c6ac01b65116e09f11bdac SHA-1: de5e4d903534b68813e16fe12d7d7f14a6ae174d SHA-256: 271d4e8fdfe3048f0485706ba6c4baea8078016bd299c58736a1516cdb5df739
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDFs on the domain 'gorillawalker.com'. This heuristic firing, combined with the ML classifier's high confidence, suggests a link-farming or redirection tactic. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact payload or user interaction intended beyond visiting the linked URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8698

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/wife-wants-two-women-lesbian-erotica-affair-volume-3.pdf
    • http://www.gorillawalker.com/children-s-thinking-cognitive-development-and-individual-differences-with-infotrac.pdf
    • http://www.gorillawalker.com/new-spirit-filled-life-bible-nkjv-kingdom-equipping-through-the.pdf
    • http://www.gorillawalker.com/the-advenures-of-rufus-the-wal-pup-rufus-vs-mount.pdf
    • http://www.gorillawalker.com/the-beautiful-ones-have-been-born-poems.pdf
    • http://www.gorillawalker.com/casual-power-how-to-power-up-your-nonverbal-communication-dress.pdf
    • http://www.gorillawalker.com/the-people-power-health-superbook-book-10-immune-system-diseases.pdf
    • http://www.gorillawalker.com/de-verborum-significatione-the-exposition-of-the-termes-and-difficill.pdf
    • http://www.gorillawalker.com/gender-polity-short-introductions.pdf
    • http://www.gorillawalker.com/denmark-vesey-the-buried-story-of-america-s-largest-slave.pdf
    • http://www.gorillawalker.com/doorway-to-h-o-p-e.pdf
    • http://www.gorillawalker.com/wolf-mark.pdf
    • http://www.gorillawalker.com/waite-group-s-com-dcom-primer-plus.pdf
    • http://www.gorillawalker.com/birds-beasts-and-bature.pdf
    • http://www.gorillawalker.com/le-futur-est-un-ancien-lac-savoirs-traditionnels-biodiversit-et.pdf
    • http://www.gorillawalker.com/scaccic-chess-voice-no-1-21-1968-71.pdf
    • http://www.gorillawalker.com/police-officer-this-is-what-i-want-to-be.pdf
    • http://www.gorillawalker.com/eat-what-you-love-love-what-you-eat-with-diabetes.pdf
    • http://www.gorillawalker.com/natural-resource-management-and-local-development-topics-in-biodiversity-and.pdf
    • http://www.gorillawalker.com/take-off-your-glasses-and-see-a-mind-body-approach.pdf
    • http://www.gorillawalker.com/eat-pray-stay-for-days-a-guide-to-long-term.pdf
    • http://www.gorillawalker.com/meditaciones-de-conversaciones-con-dios-spanish-edition.pdf
    • http://www.gorillawalker.com/left-and-right-the-significance-of-a-political-distinction.pdf
    • http://www.gorillawalker.com/simple-tibetan-buddhism-a-guide-to-tantric-living-simple-series.pdf
    • http://www.gorillawalker.com/the-configuration-space-method-for-kinematic-design-of-mechanisms.pdf
    • http://www.gorillawalker.com/above-new-york.pdf
    • http://www.gorillawalker.com/to-engineer-is-human-the-role-of-failure-in-successful.pdf
    • http://www.gorillawalker.com/the-tin-drum-kindle-edition.pdf
    • http://www.gorillawalker.com/yale-french-studies-number-99-jean-francois-lyotard-time-and.pdf
    • http://www.gorillawalker.com/contributions-of-southern-south-america-to-vertebrate-paleontology.pdf
    • http://www.gorillawalker.com/medicina-veterinaria-veterinary-medicine-biblioteca-clasica-gredos-gredos-classic-library.pdf
    • http://www.gorillawalker.com/space-oceanography-lectures-presented-at-an-intensive-course-organized-by.pdf
    • http://www.gorillawalker.com/the-missing-manatee.pdf
    • http://www.gorillawalker.com/the-art-of-portraits-and-the-nude.pdf
    • http://www.gorillawalker.com/science-milestones.pdf
    • http://www.gorillawalker.com/code-of-medical-ethics-2006-2007-current-opinions-with-annotations.pdf
    • http://www.gorillawalker.com/senderos-fronterizos-breaking-through-turtleback-school-library-binding-edition-spanish.pdf
    • http://www.gorillawalker.com/comicalities-or-budget-of-amusement-for-all-seasons-laughable-anecdotes.pdf
    • http://www.gorillawalker.com/scook.pdf
    • http://www.gorillawalker.com/jewels-of-gwahlur.pdf
    • http://www.gorillawalker.com/gender-poli
    • 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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