Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec32bc83eb8286fc…

MALICIOUS

PDF

44.7 KB Created: 2018-12-02 10:56:25 +03:00 Authoring application: Word (via Mac OS X 10.8.5 Quartz PDFContext)
MD5: 1c0cfdf17d7f7012896736d6659af839 SHA-1: 5ec2ee57879b0e5e03f855746545d1950a40daaa SHA-256: ec32bc83eb8286fcb92518e653dda6d6fb8755cd57c8a8b9d0f9cfa6e73154f0
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, primarily hosted on 'www.gorillawalker.com'. This behavior is indicative of a link farm or SEO manipulation tactic. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern beyond link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9007

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/brie-dallas-kindle-edition.pdf
    • http://www.gorillawalker.com/my-life-as-a-stupendously-stomped-soccer-star-the-incredible.pdf
    • http://www.gorillawalker.com/abschlusspr-fungen-bankwirtschaft-rechnungswesen-und-steuerung-wirtschafts-und-sozialkunde-pr.pdf
    • http://www.gorillawalker.com/nonverbal-communication-in-human-interaction-with-infotrac.pdf
    • http://www.gorillawalker.com/prealgebra-books-a-la-carte-edition-4th-edition.pdf
    • http://www.gorillawalker.com/young-children-s-rights-exploring-beliefs-principles-and-practice-second.pdf
    • http://www.gorillawalker.com/copyright.pdf
    • http://www.gorillawalker.com/el-sexo-olvidado-introducci.pdf
    • http://www.gorillawalker.com/model-stationary-and-marine-steam-engines.pdf
    • http://www.gorillawalker.com/companies-their-brands-5-volume-set-companies-and-their-brands.pdf
    • http://www.gorillawalker.com/adults-only-menage-erotica-ffm.pdf
    • http://www.gorillawalker.com/knitting-up-a-murder-yarn-genie-mysteries-book-1-kindle.pdf
    • http://www.gorillawalker.com/the-hebrew-bible-reborn-from-holy-scripture-to-the-book.pdf
    • http://www.gorillawalker.com/the-awful-end-of-prince-william-the-silent-the-first.pdf
    • http://www.gorillawalker.com/financial-analysis-in-pharmacy-practice-pharmaceutical-business-administration-series.pdf
    • http://www.gorillawalker.com/the-encyclopedia-of-civil-war-usage-an-illustrated-compendium-of.pdf
    • http://www.gorillawalker.com/american-history-a-survey-11th-edition-by-brinkley-alan-published.pdf
    • http://www.gorillawalker.com/college-fight-songs-alma-maters-for-ukulele.pdf
    • http://www.gorillawalker.com/new-curriculum-for-new-times-a-guide-to-student-centered.pdf
    • http://www.gorillawalker.com/law-in-a-flash-cards-civil-procedure-part-i.pdf
    • http://www.gorillawalker.com/opener-rebids-after-a-limited-response-bridge-concepts-and-practice.pdf
    • http://www.gorillawalker.com/zatanna-tp-vol-02-shades-of-the-past.pdf
    • http://www.gorillawalker.com/screen-and-stage-directory-the-national-casting-guide-vol-ii.pdf
    • http://www.gorillawalker.com/das-romische-spielewesen-in-der-spatantike-millennium-studien-german-edition.pdf
    • http://www.gorillawalker.com/121-marketing-ideas-to-grow-your-small-business.pdf
    • http://www.gorillawalker.com/air-breathing-fishes-evolution-diversity-and-adaptation.pdf
    • http://www.gorillawalker.com/win-your-benefits-how-to-win-and-hang-on-to.pdf
    • http://www.gorillawalker.com/project-scheduling-and-cost-control-planning-monitoring-and-controlling-the.pdf
    • http://www.gorillawalker.com/the-people-s-republic-of-china-and-the-law-of.pdf
    • http://www.gorillawalker.com/a-new-beginning-christy.pdf
    • http://www.gorillawalker.com/technic-is-fun-book-2-hirschberg.pdf
    • http://www.gorillawalker.com/un-pugno-di-moschee-c-era-una-volta-in-yemen.pdf
    • http://www.gorillawalker.com/written-on-the-wind-bfi-film-classics.pdf
    • http://www.gorillawalker.com/the-raptors-of-iowa-bur-oak-book.pdf
    • http://www.gorillawalker.com/alternative-art-new-york-1965-1985-cultural-politics.pdf
    • http://www.gorillawalker.com/the-story-behind-splash-an-unauthorized-guide-to-the-abc.pdf
    • http://www.gorillawalker.com/multiple-sclerosis-the-invisible-impacts.pdf
    • http://www.gorillawalker.com/the-reposed.pdf
    • http://www.gorillawalker.com/matrix-methods-in-analysis-lecture-notes-in-mathematics.pdf
    • http://www.gorillawalker.com/the-subject-of-film-and-race-retheorizing-politics-ideology-and.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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