Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2ad22d98590d67…

MALICIOUS

PDF

42.8 KB Created: 2019-02-13 19:54:18 +03:00 Authoring application: Acrobat PDFMaker 9.0 for Word (via Acrobat Distiller 9.0.0 (Windows))
MD5: 5093382836bbf4840ec292f85631cc2d SHA-1: 88ee77befe2c1e8cf2e213dd961e9278757c523f SHA-256: bd2ad22d98590d67fe9456cd6f39a4bfb1ce4e1629ba40bb31f71a5a8155af3e
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains a significant number of embedded external links, indicating a link farm. The primary heuristic identified a 'PDF_SEO_LINK_FARM' with 32 external links, suggesting the document's purpose is to redirect users to potentially malicious content hosted on the 'gorillawalker.com' domain. No scripts were extracted, and the document body was heavily truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/the-splendid-wayfaring-the-story-of-the-exploits-and-adventures.pdf
    • http://www.gorillawalker.com/the-laboratory-for-experimental-limnology-1954-59.pdf
    • http://www.gorillawalker.com/grant-s-atlas-of-anatomy-12th-edition-grant-john-charles.pdf
    • http://www.gorillawalker.com/the-point-entfesselte-sehnsucht-german-edition.pdf
    • http://www.gorillawalker.com/introduction-to-the-theory-of-computation.pdf
    • http://www.gorillawalker.com/disciple-from-bethany-the-adventures-of-alexander-campbell.pdf
    • http://www.gorillawalker.com/the-midwife.pdf
    • http://www.gorillawalker.com/the-art-of-chiropractic.pdf
    • http://www.gorillawalker.com/day-of-the-dragon-warcraft-book-1-no-1.pdf
    • http://www.gorillawalker.com/magic-and-misery.pdf
    • http://www.gorillawalker.com/the-cohos-trail-the-guidebook-to-new-hampshire-s-great.pdf
    • http://www.gorillawalker.com/educating-tigers.pdf
    • http://www.gorillawalker.com/methods-for-development-work-and-research-a-new-guide-for.pdf
    • http://www.gorillawalker.com/british-rust-fungi.pdf
    • http://www.gorillawalker.com/buying-and-owning-your-own-airplane-a-must-for-pilots.pdf
    • http://www.gorillawalker.com/gossip-girl-7-nobody-does-it-better-a-gossip-girl.pdf
    • http://www.gorillawalker.com/cardiovascular-disease-in-end-stage-renal-failure.pdf
    • http://www.gorillawalker.com/on-target-spanish-for-healthcare-providers-on-target-audio-cd.pdf
    • http://www.gorillawalker.com/abortion-a-positive-decision.pdf
    • http://www.gorillawalker.com/god-s-revelations-133-to-me.pdf
    • http://www.gorillawalker.com/training-tables-for-students-of-russian-training-table-for-students.pdf
    • http://www.gorillawalker.com/the-lives-of-the-popes-and-emperors.pdf
    • http://www.gorillawalker.com/cocktails-mini-wall-calendar-2015-16-month-calendar.pdf
    • http://www.gorillawalker.com/elegiac-melodies-op-34-kalmus-edition.pdf
    • http://www.gorillawalker.com/advanced-performance-improvement-in-health-care-principles-and-methods.pdf
    • http://www.gorillawalker.com/understanding-medical-surgical-nursing-study-guide.pdf
    • http://www.gorillawalker.com/saving-moirra-s-heart-book-two-of-the-moirra-s.pdf
    • http://www.gorillawalker.com/the-beezer-book-2002-annual.pdf
    • http://www.gorillawalker.com/nietzsche-a-collection-of-critical-essays-modern-studies-in-philosophy.pdf
    • http://www.gorillawalker.com/digital-photo-processing-and-dvd-titles-album-art-of-making.pdf
    • http://www.gorillawalker.com/twenty-five-ways-to-fly-better-volume-1.pdf
    • http://www.gorillawalker.com/leyandas-de-espana.pdf
    • http://www.gorillawalker.com/running-blind-a-thriller-kindle-edition.pdf
    • http://www.gorillawalker.com/bring-your-a-game-a-young-athlete-s-guide-to.pdf
    • http://www.gorillawalker.com/mastering-pastoral-care-mastering-ministry-series.pdf
    • http://www.gorillawalker.com/medicina-aviaria-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/marshall-s-journey-the-power-of-understanding-alzheimer-s.pdf
    • http://www.gorillawalker.com/ieee-1994-position-location-and-navigation-symposium-las-vegas-nevada.pdf
    • http://www.gorillawalker.com/carlos-v-cuatro-ensayos-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/working-within-words-level-h.pdf
    • http://www.gorillaw
    • 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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