Malicious PDF — malware analysis report

Static analysis result for SHA-256 903b53d1f77880a6…

MALICIOUS

PDF

42.6 KB Created: 2018-12-15 08:53:52 +03:00 Authoring application: Adobe InDesign CC 2014 (Macintosh) (via Adobe PDF Library 11.0)
MD5: 2a4018d852a17aad7018055a8af70fde SHA-1: b721c9de986dfae58c115acda86e0dc9bb824d52 SHA-256: 903b53d1f77880a672b1c80515cba467e616e9e1b0166d255afca8ce0d6f932c
90 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious with high confidence. While no scripts were extracted, the sheer volume of links suggests a malicious intent, possibly for SEO poisoning or to redirect users to phishing or malware download sites. The document body is heavily obfuscated and does not provide clear textual clues.

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/predestination-free-will-four-views-of-divine-sovereignty-human-freedom.pdf
    • http://www.gorillawalker.com/the-warriors-reflections-on-men-in-battle.pdf
    • http://www.gorillawalker.com/business-booster.pdf
    • http://www.gorillawalker.com/el-liderazgo-de-matsushita-lecciones-del-empresario-mas-destacado-del.pdf
    • http://www.gorillawalker.com/the-ultimate-freestyle-manual-kindle-edition.pdf
    • http://www.gorillawalker.com/division-of-beat-flute-a-breath-impulse-method-for-band.pdf
    • http://www.gorillawalker.com/bicycle-vacation-guide-minnesota-wisconsin.pdf
    • http://www.gorillawalker.com/the-farmer-s-veterinary-adviser-a-guide-to-the-prevention.pdf
    • http://www.gorillawalker.com/why-you-re-not-married-yet-the-straight-talk-you.pdf
    • http://www.gorillawalker.com/sherlock-academy.pdf
    • http://www.gorillawalker.com/a-guide-to-chess-endings.pdf
    • http://www.gorillawalker.com/the-work-of-grinling-gibbons.pdf
    • http://www.gorillawalker.com/atlanta-braves-great-sports-teams.pdf
    • http://www.gorillawalker.com/directions-1-advertising-and-design-in-canada.pdf
    • http://www.gorillawalker.com/organizational-processes-and-received-wisdom-hc-research-in-organizational-sciences.pdf
    • http://www.gorillawalker.com/diccionario-de-vitaminas-minerales-y-otras-sustancias-organicas-y-nutricias.pdf
    • http://www.gorillawalker.com/master-fard-muhammad-who-is-he-who-is-he-not.pdf
    • http://www.gorillawalker.com/application-of-chaos-theory-to-1-f-noise.pdf
    • http://www.gorillawalker.com/lonely-planet-austria-travel-guide-kindle-edition.pdf
    • http://www.gorillawalker.com/ten-awesome-esp-tricks-troll-discovery-kit.pdf
    • http://www.gorillawalker.com/green-political-thought.pdf
    • http://www.gorillawalker.com/yosemite-s-half-dome-a-hiking-guide.pdf
    • http://www.gorillawalker.com/sad-dog-happy-dog-how-poor-posture-affects-your-child.pdf
    • http://www.gorillawalker.com/bread-machine-baker.pdf
    • http://www.gorillawalker.com/how-to-think-logically-plus-mysearchlab-with-etext-access-card.pdf
    • http://www.gorillawalker.com/los-tesoros-de-la-pintura-puertorriquena-treasures-of-puerto-rican.pdf
    • http://www.gorillawalker.com/101-piano-practice-tips-how-to-get-your-kids-to.pdf
    • http://www.gorillawalker.com/buried-cities-forgotten-gods-william-niven-s-life-of-discovery.pdf
    • http://www.gorillawalker.com/barbarians-inside-the-gates-the-black-book-of-bolshevism.pdf
    • http://www.gorillawalker.com/anglo-saxon-manuscripts-in-microfiche-facsimile-psalters-1-book-and.pdf
    • http://www.gorillawalker.com/patrons-of-history-nobility-capital-and-political-transitions-in-poland.pdf
    • http://www.gorillawalker.com/the-dark-side-of-genius-the-life-of-alfred-hitchcock.pdf
    • http://www.gorillawalker.com/mapping-the-world-in-the-mind-ecrg-paper.pdf
    • http://www.gorillawalker.com/modern-man-in-search-of-a-soul-harvest-books.pdf
    • http://www.gorillawalker.com/rough-and-ready-thorndike-romance.pdf
    • http://www.gorillawalker.com/thematic-writing-paper-grades-3-5.pdf
    • http://www.gorillawalker.com/mos-2013-study-guide-for-microsoft-word-mos-study-guide.pdf
    • http://www.gorillawalker.com/fun-with-friends-style-secrets-for-girls-girl-talk.pdf
    • http://www.gorillawalker.com/thanks-to-my-mother.pdf
    • http://www.gorillawalker.com/the-couple-s-survival-workbook-what-you-can-do-to.pdf
    • http://www.gorillawalker.com/the-
    • 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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