Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac50396efecf127…

MALICIOUS

PDF

44.4 KB Created: 2018-12-15 20:11:27 +03:00 Authoring application: TeX (via MiKTeX pdfTeX-1.10b)
MD5: d2e3733a599a2e21fea77ddfd2093880 SHA-1: 13b2f9fc7953851e6c2233d3675d993a3429fd06 SHA-256: 2ac50396efecf1273039808e590c4a2bf95e90e347b9d90eaa309d63c26c77f3
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document as malicious. The embedded URLs are likely used to distribute malicious content or for SEO manipulation. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8439

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/from-cape-cod-to-the-bay-of-fundy-an-environmental.pdf
    • http://www.gorillawalker.com/radio-mastery-for-vfr-pilots-everything-you-need-to-know.pdf
    • http://www.gorillawalker.com/hotwire-comics-vol-2-v-2.pdf
    • http://www.gorillawalker.com/a-primer-in-formal-logic.pdf
    • http://www.gorillawalker.com/conducting-the-lawful-employment-interview-how-to-avoid-charges-of.pdf
    • http://www.gorillawalker.com/circular-v-1244.pdf
    • http://www.gorillawalker.com/privremene-karte-rasprostranjenosti-dnevnih-leptira-jugoslavije-lepidoptera-rhopalocera-provisional-distribution.pdf
    • http://www.gorillawalker.com/pacific-electric-red-cars-images-of-rail-california.pdf
    • http://www.gorillawalker.com/biomedical-particle-accelerators.pdf
    • http://www.gorillawalker.com/cliffsnotes-on-lawrence-lee-s-inherit-the-wind-cliffsnotes-literature.pdf
    • http://www.gorillawalker.com/ruin-dirty-secrets-book-3-kindle-edition.pdf
    • http://www.gorillawalker.com/make-it-count-the-life-and-times-of-basketball-great.pdf
    • http://www.gorillawalker.com/peleh-hidden-knowledge.pdf
    • http://www.gorillawalker.com/gluten-free-cookbook-for-people-on-a-gluten-free-diet.pdf
    • http://www.gorillawalker.com/holt-mcdougal-integrated-math-1-california-student-edition-interactive-worktext.pdf
    • http://www.gorillawalker.com/thompson-chain-reference-bible-kjv-version-illustrated-thompson-s-original.pdf
    • http://www.gorillawalker.com/atavus-alfonzo-volume-15.pdf
    • http://www.gorillawalker.com/literature-of-the-nonprofit-sector-a-bibliography-with-abstracts.pdf
    • http://www.gorillawalker.com/best-ever-meals-on-a-budget.pdf
    • http://www.gorillawalker.com/the-cool-impossible-the-coach-from-born-to-run-shows.pdf
    • http://www.gorillawalker.com/a-step-in-time-a-kid-s-guide-to-ephesus.pdf
    • http://www.gorillawalker.com/the-northern-zone-lake-chad-basin-environmental-health-assessment.pdf
    • http://www.gorillawalker.com/courtesans-and-tantric-consorts-sexualities-in-buddhist-narrative-iconography-and.pdf
    • http://www.gorillawalker.com/brahms-johannes-piano-trio-no-1-in-b-major-op.pdf
    • http://www.gorillawalker.com/the-2009-2014-world-outlook-for-aluminum-sheet-metal-work.pdf
    • http://www.gorillawalker.com/unpacking-the-parables-the-wisdom-teachings-of-jesus-kindle-edition.pdf
    • http://www.gorillawalker.com/plague-time-how-stealth-infections-cause-cancer-heart-disease-and.pdf
    • http://www.gorillawalker.com/lo-que-cuentan-los-onas.pdf
    • http://www.gorillawalker.com/3-dimensional-lateral-logic-mazes.pdf
    • http://www.gorillawalker.com/god-s-wisdom-for-your-life-1-000-key-scriptures.pdf
    • http://www.gorillawalker.com/50-walks-in-gloucestershire-50-walks-of-3-to-8.pdf
    • http://www.gorillawalker.com/hooray-for-earth-day-a-rhyming-picture-book-for-children.pdf
    • http://www.gorillawalker.com/kevin-jones-snowboarding-champion-extreme-sports-biographies.pdf
    • http://www.gorillawalker.com/the-cambridge-history-of-british-theatre-3-volume-paperback-set.pdf
    • http://www.gorillawalker.com/poland-betrayed-the-nazi-soviet-invasions-of-1939-campaign-chronicles.pdf
    • http://www.gorillawalker.com/castles-and-fortresses.pdf
    • http://www.gorillawalker.com/illustrated-patent-drawing-standards.pdf
    • http://www.gorillawalker.com/revised-core-rulebook-star-wars-roleplaying-game.pdf
    • http://www.gorillawalker.com/rheology-modifiers-handbook-practical-use-and-applilcation.pdf
    • http://www.gorillawalker.com/bad-apple-2-burning-daylight-kindle-edition.pdf
    • http://www.gorillawalker.com/privremene-karte-rasprostranjenosti-dnevnih-leptira-jugoslavije-lepidoptera-rhopalocera-prov
    • 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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