Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ec0209c70af1b3b…

MALICIOUS

PDF

34.9 KB Created: 2020-02-08 18:23:30 +03:00 Authoring application: - (via PDFlib Personalization Server 5.0.1 (COM/Win32) unlicensed) First seen: 2021-06-28
MD5: 64d0de644d65ae64e32402e2170b9fb6 SHA-1: b12d75910a00458f740f90a7c4f141154e84bda3 SHA-256: 6ec0209c70af1b3bbd0d114a4d628662edc6d9e2dff4cf2b19585bf3e6daac22
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files on the domain gorillawalker.com. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious payloads disguised as legitimate documents. No scripts were extracted, and the document body was unreadable, but the sheer volume of external links is highly suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8018

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/songs-of-the-seder-a-music-book-to-accompany-the.pdf In PDF document text
    • http://www.gorillawalker.com/lark-studio-series-tables.pdfIn PDF document text
    • http://www.gorillawalker.com/radiation-protective-drugs-and-their-reaction-mechanisms.pdfIn PDF document text
    • http://www.gorillawalker.com/industrial-organizational-psychology-understanding-the-workplace.pdfIn PDF document text
    • http://www.gorillawalker.com/roycroft-furniture-and-collectibles-identification-and-value-guide.pdfIn PDF document text
    • http://www.gorillawalker.com/paranoia.pdfIn PDF document text
    • http://www.gorillawalker.com/cnc-programming-handbook-2nd-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/handbook-of-early-childhood-education.pdfIn PDF document text
    • http://www.gorillawalker.com/natural-cat-care-a-complete-guide-to-holistic-health-care.pdfIn PDF document text
    • http://www.gorillawalker.com/war-in-bulgaria-a-narrative-of-personal-experiences-with-plans.pdfIn PDF document text
    • http://www.gorillawalker.com/souvenir-and-story-of-the-most-popular-summer-resort-in.pdfIn PDF document text
    • http://www.gorillawalker.com/servicing-satellite-tv-equipment.pdfIn PDF document text
    • http://www.gorillawalker.com/the-travels-of-marco-polo-publisher-penguin-classics.pdfIn PDF document text
    • http://www.gorillawalker.com/from-husband-to-manservant-a-dominant-wife-s-tale.pdfIn PDF document text
    • http://www.gorillawalker.com/power-quality-mitigation-technologies-in-a-distributed-environment-power-systems.pdfIn PDF document text
    • http://www.gorillawalker.com/kindaichi-case-files-the-playing-the-fool.pdfIn PDF document text
    • http://www.gorillawalker.com/superteams-the-secrets-of-stellar-performance-from-seven-legendary-teams.pdfIn PDF document text
    • http://www.gorillawalker.com/michigan-chat-pack-fun-questions-to-spark-michigan-conversations.pdfIn PDF document text
    • http://www.gorillawalker.com/irritable-bowel-syndrome-your-quick-guide-to-understanding-and-treatment.pdfIn PDF document text
    • http://www.gorillawalker.com/man-of-la-mancha-program.pdfIn PDF document text
    • http://www.gorillawalker.com/robot-alchemy-androids-cyborgs-and-the-magic-of-artificial-life.pdfIn PDF document text
    • http://www.gorillawalker.com/string-symphony-no-3-in-e-minor-mwv-n-3.pdfIn PDF document text
    • http://www.gorillawalker.com/reading-and-riding-hachette-s-railroad-bookstore-network-in-nineteenth.pdfIn PDF document text
    • http://www.gorillawalker.com/federal-administrative-law-american-casebook-series.pdfIn PDF document text
    • http://www.gorillawalker.com/elementary-principles-of-aeroplane-design-and-construction-a-textbook-for.pdfIn PDF document text
    • http://www.gorillawalker.com/the-little-book-of-christmas-stress.pdfIn PDF document text
    • http://www.gorillawalker.com/compassion-seeing-with-jesus-eyes-resources-for-biblical-living.pdfIn PDF document text
    • http://www.gorillawalker.com/american-heart-association-no-fad-diet-a-personal-plan-for.pdfIn PDF document text
    • http://www.gorillawalker.com/an-introduction-to-native-north-america-4th-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/bmw-500-600cc-twins-55-69.pdfIn PDF document text
    • http://www.gorillawalker.com/soccer-how-it-works-the-science-of-sports-sports-illustrated.pdfIn PDF document text
    • http://www.gorillawalker.com/the-origin-and-history-of-irish-names-of-places-first.pdfIn PDF document text
    • http://www.gorillawalker.com/baroque-recorder-anthology-volume-4-cd-23-pi-ces-fl.pdfIn PDF document text
    • http://www.gorillawalker.com/home-sick-for-the-holidays-five-filthy-stories-an-erotic.pdfIn PDF document text
    • http://www.gorillawalker.com/eating-for-acid-reflux-a-handbook-and-cookbook-for-those.pdfIn PDF document text
    • http://www.gorillawalker.com/at-home-in-fiji.pdfIn PDF document text
    • http://www.gorillawalker.com/27-a-football-coach-s-memoirs.pdfIn PDF document text
    • http://www.gorillawalker.com/american-women-during-world-war-ii-an-encyclopedia.pdfIn PDF document text
    • http://www.gorillawalker.com/ogham-the-secret-language-of-the-druids-kindle-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/commodities-webster-s-specialty-crossword-puzzles.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

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