Malicious PDF — malware analysis report

Static analysis result for SHA-256 277be6c8b995f688…

MALICIOUS

PDF

40.7 KB Created: 2019-03-18 07:34:56 +03:00 Authoring application: Acrobat PDFMaker 11 for Word (via Adobe PDF Library 11.0)
MD5: 2fde6d1b595e605f3ff525a1a659b6e3 SHA-1: 5e8046a18493856392163e09b4de8dca8fc0d7b9 SHA-256: 277be6c8b995f68850736a9e054942746dda3d74f390ca099722ee87fb78db22
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to host malicious content. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves redirecting users to a link farm hosted on www.gorillawalker.com.

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/milked-by-her-roommate-lesbian-lactation-erotica.pdf
    • http://www.gorillawalker.com/series-63-securities-license-exam-manual.pdf
    • http://www.gorillawalker.com/quantum-paradoxes-quantum-theory-for-the-perplexed.pdf
    • http://www.gorillawalker.com/the-joy-of-living-and-dying-in-peace.pdf
    • http://www.gorillawalker.com/how-to-secure-your-home-wireless-network-kindle-edition.pdf
    • http://www.gorillawalker.com/inuyasha-vol-37.pdf
    • http://www.gorillawalker.com/drinking-with-dickens-paperback.pdf
    • http://www.gorillawalker.com/cologne-koln-germany-1-20-000-street-map-incl-hurth.pdf
    • http://www.gorillawalker.com/the-shaman-sings-shaman-mysteries.pdf
    • http://www.gorillawalker.com/the-2012-2013-baltimore-ravens-the-afc-championship-the-road.pdf
    • http://www.gorillawalker.com/the-magus-of-hay-merrily-watkins-mysteries.pdf
    • http://www.gorillawalker.com/blogging-beginner-s-guide-to-starting-a-blog-blog-writing.pdf
    • http://www.gorillawalker.com/principles-of-electric-circuits-electron-flow-version-9th-edition.pdf
    • http://www.gorillawalker.com/the-love-mints-red-rhino-books.pdf
    • http://www.gorillawalker.com/the-evidence-based-guide-to-antipsychotic-medications.pdf
    • http://www.gorillawalker.com/native-strangers-beachcombers-renegades-and-castaways-in-the-south-seas.pdf
    • http://www.gorillawalker.com/una-selva-de-reyes-la-asombrosa-historia-de-los-antiguos.pdf
    • http://www.gorillawalker.com/john-colter-journey-of-discovery-a-new-look-at-an.pdf
    • http://www.gorillawalker.com/rollercoaster-finding-and-treating-bipolar-and-other-unstable-mood-disorders.pdf
    • http://www.gorillawalker.com/7-steps-to-sanity.pdf
    • http://www.gorillawalker.com/tales-from-ancient-egypt-egypt-the-arab-world-series.pdf
    • http://www.gorillawalker.com/the-lake-district-and-cumbria-in-recipes-and-photographs.pdf
    • http://www.gorillawalker.com/viaggio-nel-sudan.pdf
    • http://www.gorillawalker.com/the-culture-of-secrecy-britain-1832-1998.pdf
    • http://www.gorillawalker.com/poker-a-guaranteed-income-for-life-by-using-the-advanced.pdf
    • http://www.gorillawalker.com/black-judas-william-hannibal-thomas-and-the-american-negro.pdf
    • http://www.gorillawalker.com/aat-external-auditing-question-bank.pdf
    • http://www.gorillawalker.com/walks-in-rome.pdf
    • http://www.gorillawalker.com/early-career-teachers-stories-of-resilience-springerbriefs-in-education.pdf
    • http://www.gorillawalker.com/roxy.pdf
    • http://www.gorillawalker.com/computer-viruses-lucent-library-of-science-and-technology.pdf
    • http://www.gorillawalker.com/inconceivable.pdf
    • http://www.gorillawalker.com/salmonbellies-vs-the-world-the-story-of-lacrosse-s-most.pdf
    • http://www.gorillawalker.com/psychic-vampires-energy-stealers-do-you-have-one-amongst-your.pdf
    • http://www.gorillawalker.com/the-time-of-the-toad-a-study-of-inquisition-in.pdf
    • http://www.gorillawalker.com/clil-activities-with-cd-rom-a-resource-for-subject-and.pdf
    • http://www.gorillawalker.com/between-death-and-life-conversations-with-a-spirit.pdf
    • http://www.gorillawalker.com/military-power-explaining-victory-and-defeat-in-modern-battle.pdf
    • http://www.gorillawalker.com/jean-and-johnny.pdf
    • http://www.gorillawalker.com/dk-eyewitness-travel-turkey-dk-travel-gd-turkey-rev-e.pdf
    • http://www.gorillawalker.com/the-magus-of-hay
    • 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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