Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b9d7fb81c70204d…

MALICIOUS

PDF

43.1 KB Created: 2019-01-06 08:02:15 +03:00 Authoring application: dvips 5.72 Copyright 1997 Radical Eye Software (www.radicaleye.com) (via Acrobat Distiller 5.0.5 (Windows))
MD5: 9d929df3eb646beeeb2a43cd01d6a6ed SHA-1: 8c462c4ab6b2002999ef2a2e72867bdfc47f8ffa SHA-256: 5b9d7fb81c70204d355b30754a21147a28081d8dbd6846f26f0f4c5103ee262f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files on the 'gorillawalker.com' domain. The ML classifier also flagged the document as malicious. The primary purpose appears to be directing users to a link farm, potentially for SEO abuse or to serve as a distribution point for other malicious content.

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/al-surah-fi-al-shir-al-sudani-al-maktabah-al.pdf
    • http://www.gorillawalker.com/the-widow-spy.pdf
    • http://www.gorillawalker.com/decalog-5-wonders-ten-stories-a-billon-years-an-infinite.pdf
    • http://www.gorillawalker.com/cheese-and-cheese-cookery.pdf
    • http://www.gorillawalker.com/carne-de-perro-spanish-edition.pdf
    • http://www.gorillawalker.com/e-commerce-law-national-and-transnational-topics-and-perspectives.pdf
    • http://www.gorillawalker.com/color-your-stress-away-geometrical-patterns-coloring-book-for-adults.pdf
    • http://www.gorillawalker.com/chicken-soup-for-the-soul-love-stories-stories-of-first.pdf
    • http://www.gorillawalker.com/hamilton-bailey-s-demonstrations-of-physical-signs-in-clinical-surgery.pdf
    • http://www.gorillawalker.com/burst-bullies-and-mean-girls-student-booklets-pack-of-five.pdf
    • http://www.gorillawalker.com/a-basic-guide-to-equestrian-olympic-guides.pdf
    • http://www.gorillawalker.com/estate-and-trust-administration-for-dummies.pdf
    • http://www.gorillawalker.com/watercolor-with-o-hara.pdf
    • http://www.gorillawalker.com/the-1960-winter-olympics-images-of-sports.pdf
    • http://www.gorillawalker.com/transportation-around-the-world.pdf
    • http://www.gorillawalker.com/catholic-high-school-entrance-exams-w-cd-rom-2nd-ed.pdf
    • http://www.gorillawalker.com/birds-of-alaska-field-guide.pdf
    • http://www.gorillawalker.com/negotiating-for-success-essential-strategies-and-skills-kindle-edition.pdf
    • http://www.gorillawalker.com/the-ancient-sun-kingdoms-of-the-americas-aztec-maya-inca.pdf
    • http://www.gorillawalker.com/principles-of-architectural-detailing.pdf
    • http://www.gorillawalker.com/captain-pantoja-and-the-special-service-a-novel.pdf
    • http://www.gorillawalker.com/treasures-of-darkness-a-nine-week-bible-study.pdf
    • http://www.gorillawalker.com/sustainability-assessment-pluralism-practice-and-progress-natural-and-built-environment.pdf
    • http://www.gorillawalker.com/the-building-of-hong-kong-constructing-hong-kong-through-the.pdf
    • http://www.gorillawalker.com/the-louisiana-purchase-expanding-america-s-boundaries-life-in-the.pdf
    • http://www.gorillawalker.com/sqa-past-papers-in-intermediate-1-english-2000-2003-plus.pdf
    • http://www.gorillawalker.com/koreans-in-japan-critical-voices-from-the-margin-routledge-studies.pdf
    • http://www.gorillawalker.com/short-stories-russian-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/handbook-of-informatics-for-nurses-and-healthcare-professionals-4th-edition.pdf
    • http://www.gorillawalker.com/sanctus-ssa-ssa-sheet-music.pdf
    • http://www.gorillawalker.com/lost-my-girlfriend-to-black-dorm-roommate.pdf
    • http://www.gorillawalker.com/new-perspectives-on-html-xhtml-and-dynamic-html-comprehensive-third.pdf
    • http://www.gorillawalker.com/pat-respiratory-func-emphysema.pdf
    • http://www.gorillawalker.com/photoshop-elements-9-the-missing-manual.pdf
    • http://www.gorillawalker.com/the-special-how-to-earn-extra-money-marketing-and-success.pdf
    • http://www.gorillawalker.com/frommer-s-alaska-2007-frommer-s-complete-guides.pdf
    • http://www.gorillawalker.com/leigh-drama-queen-in-training-alpha-wanted.pdf
    • http://www.gorillawalker.com/new-proclamation-year-b-2000-easter-through-pentecost.pdf
    • http://www.gorillawalker.com/diy-wood-pallet-projects-box-set-3-in-1-73.pdf
    • http://www.gorillawalker.com/ghosts-of-anchorage-the-haunted-locations-of-anchorage-alaska-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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