Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab3af59bd1644434…

MALICIOUS

PDF

41.7 KB Created: 2019-02-13 20:36:52 +03:00 Authoring application: tFPDF 1.03
MD5: fd92f8d94d09c67cfb5bb0d95b252236 SHA-1: c8188fd4990426c135a7c81ff97a3efab7717f58 SHA-256: ab3af59bd1644434e5a8f13402ab42c714a93ac7798d4929faba6f27e6829e27
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1204.002 Malicious Link

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, often used for SEO manipulation or to distribute malicious payloads. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

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/words-to-go.pdf
    • http://www.gorillawalker.com/highland-solution-duncurra-book-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/good-girls.pdf
    • http://www.gorillawalker.com/the-elegant-man-how-to-construct-the-ideal-wardrobe.pdf
    • http://www.gorillawalker.com/memoirs-of-the-american-academy-in-rome-volume-liv-2009.pdf
    • http://www.gorillawalker.com/online-game-pioneers-at-work.pdf
    • http://www.gorillawalker.com/watercolor-techniques-for-the-beginner-decorative-painting-9770.pdf
    • http://www.gorillawalker.com/no-doubt-about-it-the-case-for-christianity.pdf
    • http://www.gorillawalker.com/student-workbook-for-public-relations-writing-principles-in-practice.pdf
    • http://www.gorillawalker.com/iceland-road-map-country-road-touring-italian-german-english-and.pdf
    • http://www.gorillawalker.com/the-music-and-history-of-the-baroque-trumpet-before-1721.pdf
    • http://www.gorillawalker.com/thief-in-the-night-the-case-of-the-missing-millennium.pdf
    • http://www.gorillawalker.com/molecular-collision-theory-dover-books-on-chemistry.pdf
    • http://www.gorillawalker.com/teaching-handicapped-students.pdf
    • http://www.gorillawalker.com/tear-down-this-wall-of-silence-dealing-with-sexual-abuse.pdf
    • http://www.gorillawalker.com/people-smart-in-business.pdf
    • http://www.gorillawalker.com/at-issue-series-is-islam-a-religion-of-war-or.pdf
    • http://www.gorillawalker.com/the-holy-quran-30-juz-set-in-a-box-quality.pdf
    • http://www.gorillawalker.com/confounding-the-color-line-the-american-indian-black-experience-in.pdf
    • http://www.gorillawalker.com/m-c-escher-wall-calendar-2015-by-day-dream-calendar.pdf
    • http://www.gorillawalker.com/california-construction-law-and-public-contracting-in-california-a-primer.pdf
    • http://www.gorillawalker.com/plant-nematodes-of-agricultural-importance-a-color-handbook.pdf
    • http://www.gorillawalker.com/get-rich-stay-rich-investing-for-monthly-income.pdf
    • http://www.gorillawalker.com/haircoloring-in-plain-english-a-practical-guide-for-professionals.pdf
    • http://www.gorillawalker.com/the-private-life-of-the-brain-emotions-consciousness-and-the.pdf
    • http://www.gorillawalker.com/reflections-on-the-word-devotional-meditating-on-god-s-word.pdf
    • http://www.gorillawalker.com/james-lee-byars-the-white-mass.pdf
    • http://www.gorillawalker.com/mugai-ryu-the-classical-japanese-art-of-drawing-the-sword.pdf
    • http://www.gorillawalker.com/automatic-wealth-i-the-secrets-of-the-millionaire-mind-including.pdf
    • http://www.gorillawalker.com/the-mountain-of-moses-the-discovery-of-mount-sinai.pdf
    • http://www.gorillawalker.com/howling-at-the-moon-the-odyssey-of-a-monstrous-music.pdf
    • http://www.gorillawalker.com/aunt-olive-in-bohemia.pdf
    • http://www.gorillawalker.com/inside-passage-living-with-killer-whales-bald-eagles-and-kwakiutl.pdf
    • http://www.gorillawalker.com/adventures-into-mexico-american-tourism-beyond-the-border-jaguar-books.pdf
    • http://www.gorillawalker.com/anat-of-surgical-exposures.pdf
    • http://www.gorillawalker.com/diagnostic-mathematical-tasks-schleiger-howard-gough-john.pdf
    • http://www.gorillawalker.com/l-ispettore-generale-il-matrimonio-i-giocatori.pdf
    • http://www.gorillawalker.com/stones-in-the-road-the-sugar-tree-series-book-2.pdf
    • http://www.gorillawalker.com/paradise-regained-in-plain-and-simple-english.pdf
    • http://www.gorillawalker.com/xzibit-hip-hop.pdf
    • http://www.gorillawalker.com/iceland-road-map-country-road-touring-italian-german-engli
    • 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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