Malicious PDF — malware analysis report

Static analysis result for SHA-256 d83d1e1dfd0819e9…

MALICIOUS

PDF

46.2 KB Created: 2018-11-23 21:03:25 +03:00 Authoring application: TeX (via pdfTeX-1.40.16)
MD5: a1e73232315e4657847064239146586a SHA-1: 55c1ed52f69015be2fc89edc2148ed0a64f23f98 SHA-256: d83d1e1dfd0819e9e7c338bdb201b8a584fdcc193580889452dee814ed5996a8
150 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Dropper.Agent-7310461-0 and a machine learning classifier. The primary heuristic indicates a link farm with 32 external PDF links, suggesting a delivery mechanism for further malicious content or SEO abuse. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8396

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7310461-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7310461-0
  • 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/michelin-red-guide-2001-london-hotels-and-restaurants-michelin-reg.pdf
    • http://www.gorillawalker.com/high-court-case-summaries-on-torts-keyed-to-epstein-9th.pdf
    • http://www.gorillawalker.com/the-social-worker-s-guide-to-children-and-families-law.pdf
    • http://www.gorillawalker.com/a-new-career-for-eloise.pdf
    • http://www.gorillawalker.com/neurodevelopmental-outcomes-of-preterm-birth-from-childhood-to-adult-life.pdf
    • http://www.gorillawalker.com/la-resoluci-n-para-mujeres-spanish-edition.pdf
    • http://www.gorillawalker.com/the-accidental-bond-the-power-of-sibling-relationships.pdf
    • http://www.gorillawalker.com/westray-flagstone-guide-to-the-geology-of-an-island.pdf
    • http://www.gorillawalker.com/popular-hand-book-for-cement-and-concrete-users-a-comprehensive.pdf
    • http://www.gorillawalker.com/the-foolproof-foodservice-selection-system-the-complete-manual-for-creating.pdf
    • http://www.gorillawalker.com/riding-the-magic-carpet-a-surfer-s-odyssey-in-search.pdf
    • http://www.gorillawalker.com/francis-the-journey-and-the-dream.pdf
    • http://www.gorillawalker.com/year-of-no-rain.pdf
    • http://www.gorillawalker.com/one-last-thing-the-elite-operatives.pdf
    • http://www.gorillawalker.com/fight-takes-survivor-to-next-level-health-his-cancer-in.pdf
    • http://www.gorillawalker.com/rainforest-adventure-preschool-bible-story-foldout-rainforest-adventures.pdf
    • http://www.gorillawalker.com/a-world-of-weather-fundamentals-of-meteorology-w-cd-rom.pdf
    • http://www.gorillawalker.com/zombie-1-of-4-zombie-vol-1.pdf
    • http://www.gorillawalker.com/come-back-to-me-mass-market-paperback.pdf
    • http://www.gorillawalker.com/profanations.pdf
    • http://www.gorillawalker.com/empire-and-islam-punjab-and-the-making-of-pakistan-comparative.pdf
    • http://www.gorillawalker.com/das-periphrastische-kausativ-im-vedischen-muenchner-forschungen-zur-historischen-sprachwissenschaft.pdf
    • http://www.gorillawalker.com/linux-for-beginners-an-introduction-to-the-linux-operating-system.pdf
    • http://www.gorillawalker.com/cleopatra-an-opera-in-four-acts-scholar-s-choice-edition.pdf
    • http://www.gorillawalker.com/reinventing-the-wheel-a-story-of-genius-innovation-and-grand.pdf
    • http://www.gorillawalker.com/debris-of-shadows-book-i-the-lies-of-the-sage.pdf
    • http://www.gorillawalker.com/from-the-land-of-shadows-the-making-of-grey-owl.pdf
    • http://www.gorillawalker.com/cosmic-ordering-how-to-use-cosmic-ordering-to-get-everything.pdf
    • http://www.gorillawalker.com/a-guide-to-making-leather-handbags-a-collection-of-historical.pdf
    • http://www.gorillawalker.com/lebanon-station-quadrangle-florida-levy-co-1955-7-5-minute.pdf
    • http://www.gorillawalker.com/logo-design-love-a-guide-to-creating-iconic-brand-identities.pdf
    • http://www.gorillawalker.com/pop-the-invention-of-bubble-gum.pdf
    • http://www.gorillawalker.com/gcse-ict-complete-revision-practice-complete-revision-and-practice.pdf
    • http://www.gorillawalker.com/essays-that-will-get-you-into-medical-school-by-dowhan.pdf
    • http://www.gorillawalker.com/aquinas-an-introduction-to-the-life-and-work-of-the.pdf
    • http://www.gorillawalker.com/women-s-tales-from-the-new-mexico-wpa-la-diabla.pdf
    • http://www.gorillawalker.com/easter-people-living-community.pdf
    • http://www.gorillawalker.com/michigan-christmas-trivia.pdf
    • http://www.gorillawalker.com/the-mikado-act-i-girl-s-chorus-comes-a-train.pdf
    • http://www.gorillawalker.com/social-security-bill-3rd-sitting-tuesday-28-october-1997-afternoon.pdf
    • http://www.gorillawalker.com/la-resoluci-n-para-mujeres-spanish-edition
    • 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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