Malicious PDF — malware analysis report

Static analysis result for SHA-256 916fdfb6cd6e4638…

MALICIOUS

PDF

42.8 KB Created: 2018-11-23 21:03:21 +03:00 Authoring application: UnknownApplication (via XEP 4.4 build 20050610)
MD5: 26bb1fb93ae6f279be21a0675ff7c7de SHA-1: ec61b0089681bb67392e0a683e35c252870163f4 SHA-256: 916fdfb6cd6e4638e70267f662f551072495f30f0bfc76a9b76853b72baa0e2e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a link farm with 32 external links, primarily pointing to PDF files on www.gorillawalker.com. This suggests a tactic to drive traffic to a large number of SEO-optimized documents, potentially for malicious redirection or to inflate traffic metrics. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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/complete-guide-to-restoring-antique-furniture.pdf
    • http://www.gorillawalker.com/the-natural-law-a-study-in-legal-and-social-history.pdf
    • http://www.gorillawalker.com/the-dragon-slayer.pdf
    • http://www.gorillawalker.com/prolegomena-to-every-future-system-of-metaphysics-which-can-claim.pdf
    • http://www.gorillawalker.com/bonaventure-crossroad-spiritual-legacy.pdf
    • http://www.gorillawalker.com/logic-puzzles-to-bend-your-brain.pdf
    • http://www.gorillawalker.com/from-galileo-to-newton.pdf
    • http://www.gorillawalker.com/super-sports-star-grant-hill.pdf
    • http://www.gorillawalker.com/trace-elements-and-dental-disease-postgraduate-dental-handbook-series.pdf
    • http://www.gorillawalker.com/the-girl-who-played-with-fire-millennium-series-book-2.pdf
    • http://www.gorillawalker.com/the-abc-and-xyz-of-bee-culture-a-cyclopedia-of.pdf
    • http://www.gorillawalker.com/the-holy-bible-containing-the-books-of-the-old-and.pdf
    • http://www.gorillawalker.com/white-of-the-moon-new-tales-of-madness-and-dread.pdf
    • http://www.gorillawalker.com/the-erotic-life-of-racism.pdf
    • http://www.gorillawalker.com/the-dictionary-of-demons-names-of-the-damned.pdf
    • http://www.gorillawalker.com/ancona-to-the-midwest-a-culinary-journey-an-italian-immigrant.pdf
    • http://www.gorillawalker.com/the-law-is-a-lady.pdf
    • http://www.gorillawalker.com/perhaps-today-living-every-day-in-the-light-of-christ.pdf
    • http://www.gorillawalker.com/restaurant-management-customers-operations-and-employees-3rd-edition.pdf
    • http://www.gorillawalker.com/fish-marketing-and-consumption-survey-in-the-kyrgyz-republic-fao.pdf
    • http://www.gorillawalker.com/left-turn-an-erick-lang-novel-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/10-simple-solutions-to-panic-how-to-overcome-panic-attacks.pdf
    • http://www.gorillawalker.com/tobacco-or-health-a-global-status-report.pdf
    • http://www.gorillawalker.com/judaism-the-basics.pdf
    • http://www.gorillawalker.com/take-your-wings-and-fly-a-journey-through-a-private.pdf
    • http://www.gorillawalker.com/nurturing-and-developing-creativity-the-emergence-of-a-discipline-creativity.pdf
    • http://www.gorillawalker.com/cheyenne-bottoms-wetland-in-jeopardy.pdf
    • http://www.gorillawalker.com/foundation-stones.pdf
    • http://www.gorillawalker.com/footsteps-african-american-history-january-february-1999-volume-1.pdf
    • http://www.gorillawalker.com/manhattan-in-maps-1527-1995.pdf
    • http://www.gorillawalker.com/toots-and-the-upside-down-house.pdf
    • http://www.gorillawalker.com/barron-s-ap-french-with-audio-cds-barron-s-ap.pdf
    • http://www.gorillawalker.com/new-drug-development-a-regulatory-overview-sixth-edition.pdf
    • http://www.gorillawalker.com/alice-walker-bloom-s-major-novelists.pdf
    • http://www.gorillawalker.com/faust-vocal-score-french-english-language-edition-vocal-score-kalmus.pdf
    • http://www.gorillawalker.com/nez-gorge-oreille-en-m-decine-traditionnelle-chinoise-m-decines.pdf
    • http://www.gorillawalker.com/guns-grenades-and-grunts-first-person-shooter-games-approaches-to.pdf
    • http://www.gorillawalker.com/the-mind-of-the-trout-a-cognitive-ecology-for-biologists.pdf
    • http://www.gorillawalker.com/the-gravity-model-in-international-trade-advances-and-applications.pdf
    • http://www.gorillawalker.com/microsoft-excel-2013-complete-shelly-cashman-series.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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