Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac9afbc235582f40…

MALICIOUS

PDF

42.5 KB Created: 2019-05-05 01:34:21 +03:00 Authoring application: TeX (via pdfTeX-0.13d)
MD5: 0ce205b1fe64a6d76daacc14db29dea7 SHA-1: e7e81ec67f32d73b92f0d85fe0cf9f44ad5d999e SHA-256: ac9afbc235582f406be2495783113e7ae0aac77de9cfdd1cf230c6f5763bc6c5
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files on the domain 'gorillawalker.com'. This is indicative of a link farm or SEO manipulation tactic, which can be used to distribute malicious content or drive traffic to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/owned-by-the-incubus.pdf
    • http://www.gorillawalker.com/james-stewart-behind-the-scenes-of-a-wonderful-life.pdf
    • http://www.gorillawalker.com/british-overseas-a-guide-to-records-of-their-births-baptisms.pdf
    • http://www.gorillawalker.com/fifty-hikes-in-massachusetts-hikes-and-walks-from-the-top.pdf
    • http://www.gorillawalker.com/cricket-and-community-in-england-1800-to-the-present-day.pdf
    • http://www.gorillawalker.com/every-child-has-a-thinking-style-a-guide-to-recognizing.pdf
    • http://www.gorillawalker.com/border-economies-in-the-greater-mekong-sub-region-ide-jetro.pdf
    • http://www.gorillawalker.com/autobiography-of-self-by-nobody-the-autobiography-that-we-all.pdf
    • http://www.gorillawalker.com/spirit-realms-of-vietnam-vol-2-the-diaries.pdf
    • http://www.gorillawalker.com/rockhounding-utah-rockhounding-series.pdf
    • http://www.gorillawalker.com/blood-and-volume-inside-new-york-s-israeli-mafia.pdf
    • http://www.gorillawalker.com/gilda-joyce-the-dead-drop.pdf
    • http://www.gorillawalker.com/the-chinese-puzzle-the-baron-the-chinese-puzzle-kindle-edition.pdf
    • http://www.gorillawalker.com/petite-debonair-word-searches-portable-puzzles.pdf
    • http://www.gorillawalker.com/the-2009-import-and-export-market-for-tennis-badminton-and.pdf
    • http://www.gorillawalker.com/peter-gorton-an-invitation-to-cook.pdf
    • http://www.gorillawalker.com/wild-cats-status-survey-and-conservation-action-plan-iucn-ssc.pdf
    • http://www.gorillawalker.com/we-are-the-earth-our-multicultural-world.pdf
    • http://www.gorillawalker.com/europa-the-ocean-moon-springer-praxis-books-kindle-edition.pdf
    • http://www.gorillawalker.com/language-and-imagery-of-the-bible.pdf
    • http://www.gorillawalker.com/the-complete-pegana-call-of-cthulhu-fiction.pdf
    • http://www.gorillawalker.com/pharmacology-kindle-edition.pdf
    • http://www.gorillawalker.com/conflict-in-marriage-the-unhappy-undivorced.pdf
    • http://www.gorillawalker.com/numbers-lift-the-flap-books.pdf
    • http://www.gorillawalker.com/sentimental-opera-questions-of-genre-in-the-age-of-bourgeois.pdf
    • http://www.gorillawalker.com/history-of-buddhism-in-vietnam-cultural-heritage-and-contemporary-change.pdf
    • http://www.gorillawalker.com/libro-de-los-cantares-spanish-edition.pdf
    • http://www.gorillawalker.com/mountains-and-highlands-biomes-atlases-raintree-hardcover.pdf
    • http://www.gorillawalker.com/the-union-at-risk-jacksonian-democracy-states-rights-and-nullification.pdf
    • http://www.gorillawalker.com/ocr-economics-student-guide-1-microeconomics-1.pdf
    • http://www.gorillawalker.com/bargaining-for-advantage-negotiation-strategies-for-reasonable-people-2nd-edition.pdf
    • http://www.gorillawalker.com/introduction-to-the-constitution-of-india.pdf
    • http://www.gorillawalker.com/shirley-and-pipsi-in-their-own-words-kindle-edition.pdf
    • http://www.gorillawalker.com/to-drop-a-dime.pdf
    • http://www.gorillawalker.com/card-miracles.pdf
    • http://www.gorillawalker.com/an-institutional-theory-of-law-new-approaches-to-legal-positivism.pdf
    • http://www.gorillawalker.com/keeping-katherine-a-mother-s-journey-to-acceptance.pdf
    • http://www.gorillawalker.com/smoke-gets-in-your-eyes-and-other-lessons-from-the.pdf
    • http://www.gorillawalker.com/knight-an-impossible-novel-impossible-4.pdf
    • http://www.gorillawalker.com/reel-success-creating-demo-reels-and-animation-portfolios.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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