Malicious PDF — malware analysis report

Static analysis result for SHA-256 88ac2073da341eb1…

MALICIOUS

PDF

42.2 KB Created: 2019-04-30 16:29:20 +03:00 Authoring application: Microsoft® Office Word 2007
MD5: 5fbb02c77566b90687bba46e89488705 SHA-1: 3aa3c0074e3c9e7b3a5e259d6e42bb0710ee8abd SHA-256: 88ac2073da341eb1231246f2afe63f6d176861c16ed61f8566daf9cf61180f44
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. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest malicious intent, likely related to SEO manipulation or redirecting users to potentially harmful content. The document body itself is heavily obfuscated and does not provide clear textual lures.

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/memmler-s-structure-and-function-of-the-human-body-8th.pdf
    • http://www.gorillawalker.com/miscellany-of-hebrew-literature-2-volumes-society-of-hebrew-literature.pdf
    • http://www.gorillawalker.com/late-temple-architecture-of-india-15th-to-19th-centuries-continuities.pdf
    • http://www.gorillawalker.com/advances-in-synthetic-organic-chemistry-and-methods-reported-in-us.pdf
    • http://www.gorillawalker.com/highland-sparks-clan-grant-book-5-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/cows-and-calves-first-step-nonfiction-animal-families.pdf
    • http://www.gorillawalker.com/the-lasgidi-entrepreneur-my-dream-my-struggles-my-victory-kindle.pdf
    • http://www.gorillawalker.com/heroes-villains-star-wars-coloring-book.pdf
    • http://www.gorillawalker.com/guilty-of-dancing-the-chachacha.pdf
    • http://www.gorillawalker.com/auditoria-aplicada-2-tomos-spanish-edition.pdf
    • http://www.gorillawalker.com/the-restraint-of-the-exercise-of-one-s-rights.pdf
    • http://www.gorillawalker.com/play-hymns-bk-3-10-piano-arrangements-of-traditional-favorites.pdf
    • http://www.gorillawalker.com/21st-century-ultimate-medical-guide-to-endometrial-uterine-cancer-authoritative.pdf
    • http://www.gorillawalker.com/thrive-teen-devotional-take-a-turn-for-god-in-just.pdf
    • http://www.gorillawalker.com/monetary-men-the-allies-struggle-to-recover-and-restore-nazi.pdf
    • http://www.gorillawalker.com/the-book-of-sarahs.pdf
    • http://www.gorillawalker.com/september-tod-german-edition.pdf
    • http://www.gorillawalker.com/new-zealand-daily-telegraph-guide.pdf
    • http://www.gorillawalker.com/tort-law-10th-edition-mylawchamber-pack.pdf
    • http://www.gorillawalker.com/el-libro-tachado-noema-spanish-edition.pdf
    • http://www.gorillawalker.com/promise-of-the-valley-value-ltd-westward-dreams.pdf
    • http://www.gorillawalker.com/emperor-qin-s-terra-cotta-army-unearthing-ancient-worlds.pdf
    • http://www.gorillawalker.com/6th-international-munich-chassis-symposium-2015-chassis-tech-plus-proceedings.pdf
    • http://www.gorillawalker.com/no-rest-for-the-wicked-immortals-after-dark-book-2.pdf
    • http://www.gorillawalker.com/finite-mathematics-with-calculus.pdf
    • http://www.gorillawalker.com/residential-property-appraisal.pdf
    • http://www.gorillawalker.com/witnesses-of-jehovah.pdf
    • http://www.gorillawalker.com/imaging-of-white-matter-an-issue-of-radiologic-clinics-of.pdf
    • http://www.gorillawalker.com/el-croquis-174-175-david-chipperfield-2010-2014-english-and.pdf
    • http://www.gorillawalker.com/bernese-alps-switzerland-a-walker-s-guide-a-walking-guide.pdf
    • http://www.gorillawalker.com/heavy-metal-july-1980.pdf
    • http://www.gorillawalker.com/praise-in-many-colors-hymns-spirituals-gospel-songs-and-carols.pdf
    • http://www.gorillawalker.com/the-first-book-of-broadway-solos-soprano-book-audio-cd.pdf
    • http://www.gorillawalker.com/crazy-time-surviving-divorce.pdf
    • http://www.gorillawalker.com/the-three-pillars-of-zen-teaching-practice-and-enlightenment.pdf
    • http://www.gorillawalker.com/pyrosequencing-protocols-methods-in-molecular-biology.pdf
    • http://www.gorillawalker.com/ancient-iraq-pelican-books.pdf
    • http://www.gorillawalker.com/linear-algebra-done-right-undergraduate-texts-in-mathematics.pdf
    • http://www.gorillawalker.com/paranormal-camp-the-paranormal-kids-series-book-2-kindle-edition.pdf
    • http://www.gorillawalker.com/sedimentation-in-a-synrogenic-basin-complex-the-upper-carboniferous-of.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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