Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f2e4912941d0164…

MALICIOUS

PDF

42.3 KB Created: 2018-12-15 08:52:25 +03:00 Authoring application: Microsoft® Word 2016
MD5: 6a5aaabc615aac79354dc68166c98dba SHA-1: aa49c69c7db08964ec163ec8584b4b11f0c60035 SHA-256: 5f2e4912941d0164257beb04dae22c827164bc83f94e269e26cd960c39446395
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing indicating a large number of embedded external links, suggesting a link farm or SEO manipulation tactic. The ML classifier also flagged the PDF as malicious. While no scripts were extracted, the sheer volume of links and the ML detection point towards malicious intent, possibly to lead users to malicious sites or to manipulate search engine rankings.

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/harrowing-halls-dungeon-tiles-a-d-d-accessory-4th-edition.pdf
    • http://www.gorillawalker.com/niagara-falls-2nd-edition-tourist-town-guides.pdf
    • http://www.gorillawalker.com/bathroom-book-of-british-columbia-trivia-weird-wacky-and-wild.pdf
    • http://www.gorillawalker.com/the-power-of-vulnerability-teachings-on-authenticity-connection-and-courage.pdf
    • http://www.gorillawalker.com/a-tai-chi-imagery-workbook-spirit-intent-and-motion.pdf
    • http://www.gorillawalker.com/easy-compositions-kalmus-edition.pdf
    • http://www.gorillawalker.com/the-incredible-internet-guide-to-online-investing-money-management-incredible.pdf
    • http://www.gorillawalker.com/producing-great-sound-for-digital-video.pdf
    • http://www.gorillawalker.com/the-rifle-and-the-hound-in-ceylon.pdf
    • http://www.gorillawalker.com/particle-physics-for-non-physicists-a-tour-of-the-cosmos.pdf
    • http://www.gorillawalker.com/carnival-festivals.pdf
    • http://www.gorillawalker.com/werewolf-a-true-story-of-demonic-possession.pdf
    • http://www.gorillawalker.com/food-allergies-and-food-intolerance-the-complete-guide-to-their.pdf
    • http://www.gorillawalker.com/rediscover-jesus.pdf
    • http://www.gorillawalker.com/shadow-boxers-sweat-sacrifice-the-will-to-survive-in-american.pdf
    • http://www.gorillawalker.com/the-allingham-case-book.pdf
    • http://www.gorillawalker.com/god-of-abundance-overflow-extravagance-kingdom-joy-series-volume-7.pdf
    • http://www.gorillawalker.com/casenote-legal-briefs-indian-law-keyed-to-getches-wilkinson-williams.pdf
    • http://www.gorillawalker.com/how-to-avoid-marrying-a-jerk-the-foolproof-way-to.pdf
    • http://www.gorillawalker.com/the-billionaire-s-associate-stories-1-2-3-4-5.pdf
    • http://www.gorillawalker.com/the-globe-and-mail-style-book-ninth-edition-a-guide.pdf
    • http://www.gorillawalker.com/revision-practice-and-home-learning-key-stage-1-pack-a.pdf
    • http://www.gorillawalker.com/handcrafting-artisan-shampoo-bars-from-your-kitchen-kindle-edition.pdf
    • http://www.gorillawalker.com/united-kingdom-sports-market-key-note-report.pdf
    • http://www.gorillawalker.com/puerto-rico-the-united-states.pdf
    • http://www.gorillawalker.com/shanghai-world-city-map.pdf
    • http://www.gorillawalker.com/colon-classification-practice.pdf
    • http://www.gorillawalker.com/experimental-design-in-biotechnology-statistics-a-series-of-textbooks-and.pdf
    • http://www.gorillawalker.com/the-pickle-clowns-new-american-circus-comedy.pdf
    • http://www.gorillawalker.com/iso-13555-1-2003-diesel-engines-procedure-for-checking-the.pdf
    • http://www.gorillawalker.com/discovering-long-island.pdf
    • http://www.gorillawalker.com/industry-and-government-in-france-and-england-1540-1640.pdf
    • http://www.gorillawalker.com/acritarchs-in-british-stratigraphy-geological-society-special-report.pdf
    • http://www.gorillawalker.com/coastal-pleasures-perusing-the-french-coastline.pdf
    • http://www.gorillawalker.com/the-eighth-passenger-a-flight-of-recollection-and-discovery.pdf
    • http://www.gorillawalker.com/manual-of-gynecologic-oncology.pdf
    • http://www.gorillawalker.com/the-great-team-omnibus.pdf
    • http://www.gorillawalker.com/orchid-biotechnology-ii.pdf
    • http://www.gorillawalker.com/simply-quince.pdf
    • http://www.gorillawalker.com/music-minus-one-flute-or-alto-recorder-j-s-bach.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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