Malicious PDF — malware analysis report

Static analysis result for SHA-256 28bc4b26b61320fe…

MALICIOUS

PDF

47.3 KB Created: 2018-11-30 20:58:49 +03:00 Authoring application: (Infix Pro) (via PDFKit.NET 3.0.58.0)
MD5: 3539938ff8c1f781b68bcea3f8d10a93 SHA-1: f48a069bfc34518cfeaf305cc47636c61ee7e2e2 SHA-256: 28bc4b26b61320fe9e4f5b6c7a5dea89918b3818159e4aca537834d12a558f40
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files on the same domain, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a link farm or distribution mechanism. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the specific lure. The ML classifier also flagged the document as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8518

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/interpreting-yesterday-today-and-tomorrow-american-translators-association-scholarly-monograph.pdf
    • http://www.gorillawalker.com/scalp-dance-indian-warfare-on-the-high-plains-1865-1879.pdf
    • http://www.gorillawalker.com/savage-red-sonja-queen-of-the-frozen-wastes-tpb-red.pdf
    • http://www.gorillawalker.com/healing-the-trauma-of-abuse-a-women-s-workbook.pdf
    • http://www.gorillawalker.com/her-healthy-heart-a-woman-s-guide-to-preventing-and.pdf
    • http://www.gorillawalker.com/wolfsbane-discarded-heroes-book-3.pdf
    • http://www.gorillawalker.com/undercover-angels-malachi-s-battle.pdf
    • http://www.gorillawalker.com/mad-for-foucault-rethinking-the-foundations-of-queer-theory-gender.pdf
    • http://www.gorillawalker.com/psychopharmacology-across-the-life-span-section-iv-of-american-psychiatric.pdf
    • http://www.gorillawalker.com/don-t-just-sign-communicate-a-student-s-guide-to.pdf
    • http://www.gorillawalker.com/365-health-and-fitness-tips-365-tips-a-year.pdf
    • http://www.gorillawalker.com/god-wanted-me-god-created-me.pdf
    • http://www.gorillawalker.com/your-amazing-newborn.pdf
    • http://www.gorillawalker.com/imagery-in-the-book-of-revelation-contributions-to-biblical-exegesis.pdf
    • http://www.gorillawalker.com/undercover-how-i-went-from-company-man-to-fbi-spy.pdf
    • http://www.gorillawalker.com/her-cowboy-s-way.pdf
    • http://www.gorillawalker.com/journalistenrecht-ein-leitfaden-f-r-medienschaffende-social-web-online-h.pdf
    • http://www.gorillawalker.com/kaplan-8-practice-tests-sat.pdf
    • http://www.gorillawalker.com/economic-power-in-a-changing-international-system.pdf
    • http://www.gorillawalker.com/flower-power-flower-remedies-for-healing-body-and-soul-through.pdf
    • http://www.gorillawalker.com/john-dee-s-conversations-with-angels-cabala-alchemy-and-the.pdf
    • http://www.gorillawalker.com/amish-christmas-wish-boxed-set-amish-romance-amish-christmas-wish.pdf
    • http://www.gorillawalker.com/earth-power-techniques-of-natural-magic-llewellyn-s-practical-magick.pdf
    • http://www.gorillawalker.com/the-story-of-abelard-s-adversities-mediaval-sources-in-translation.pdf
    • http://www.gorillawalker.com/explorer-s-guide-victoria-vancouver-island-a-great-destination-explorer.pdf
    • http://www.gorillawalker.com/garden-goodness-delicious-vegetarian-recipes-fresh-from-the-garden-straight.pdf
    • http://www.gorillawalker.com/auto-exploraci.pdf
    • http://www.gorillawalker.com/tribology-a-systems-approach-to-the-science-and-technology-of.pdf
    • http://www.gorillawalker.com/consulting-secrets-to-triple-your-income-how-to-start-and.pdf
    • http://www.gorillawalker.com/hamburg-travel-guide-sightseeing-hotel-restaurant-shopping-highlights.pdf
    • http://www.gorillawalker.com/first-lessons-ukulele-with-online-audio-and-video.pdf
    • http://www.gorillawalker.com/sympathy-sensibility-and-the-literature-of-feeling-in-the-eighteenth.pdf
    • http://www.gorillawalker.com/pension-planning-pensions-profit-sharing-and-other-deferred-compensation-plans.pdf
    • http://www.gorillawalker.com/6th-symposium-on-reliability-in-distributed-software-and-database-systems.pdf
    • http://www.gorillawalker.com/the-pillars-of-islam-volume-ii-laws-pertaining-to-human.pdf
    • http://www.gorillawalker.com/tell-me-a-story-timeless-folktales-from-around-the-world.pdf
    • http://www.gorillawalker.com/commercial-real-estate-values-down-in-2003-commercial-an-article.pdf
    • http://www.gorillawalker.com/medical-terminology-on-line-t-a-lafleur-passcode.pdf
    • http://www.gorillawalker.com/sexy-girl-next-door-german-english-french-and-italian-edition.pdf
    • http://www.gorillawalker.com/beginning-employment-law-beginning-the-law.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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