Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd12cb6226ea8500…

MALICIOUS

PDF

40.4 KB Created: 2018-11-30 20:31:01 +03:00 Authoring application: - (via Python PDF Library - http://pybrary.net/pyPdf/)
MD5: 1b706d4e29ca944ed5482f8642b5cba6 SHA-1: 3dffe655ae137047f8b55831c77453600a9587b4 SHA-256: bd12cb6226ea8500db3ec2a36cdbf8476d0fe0e06b67a3ac2cbe3da70e200961
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious payloads. The ML classifier also flagged this document as malicious with high confidence. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a deeper analysis of its specific intent beyond the link farm.

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/balloon-flying-machine-helicopter-further-studies-in-the-history-of.pdf
    • http://www.gorillawalker.com/futas-of-the-night-penelope-paranormal-futanari-erotica.pdf
    • http://www.gorillawalker.com/gan-based-laser-diodes-towards-longer-wavelengths-and-short-pulses.pdf
    • http://www.gorillawalker.com/the-hors-d-oeuvre-bible.pdf
    • http://www.gorillawalker.com/chelsea-station-issue-1.pdf
    • http://www.gorillawalker.com/chess-openings-the-easy-way.pdf
    • http://www.gorillawalker.com/seduced-by-the-neighbours-lesbian-bisexual-steamy-taboo-menage-erotica.pdf
    • http://www.gorillawalker.com/what-not-to-drive.pdf
    • http://www.gorillawalker.com/united-states-magistrates-in-the-federal-courts-subordinate-judges.pdf
    • http://www.gorillawalker.com/hoop-dreams-7-double-team.pdf
    • http://www.gorillawalker.com/handbook-of-research-on-design-and-management-of-lean-production.pdf
    • http://www.gorillawalker.com/subject-guide-to-children-s-books-in-print-1991-92.pdf
    • http://www.gorillawalker.com/superconductivity-of-transition-metals-their-alloys-and-compounds-springer-series.pdf
    • http://www.gorillawalker.com/brilliant-battleships-volume-2.pdf
    • http://www.gorillawalker.com/svg-essentials-kindle-edition.pdf
    • http://www.gorillawalker.com/the-ultimate-chocolate-recipe-ebook-kindle-edition.pdf
    • http://www.gorillawalker.com/sixty-years-the-beano-and-the-dandy-funshine-and-laughter.pdf
    • http://www.gorillawalker.com/including-people-with-disabilities-in-faith-communities-a-guide-for.pdf
    • http://www.gorillawalker.com/fighter-aces-of-the-luftwaffe.pdf
    • http://www.gorillawalker.com/tiger-s-eye.pdf
    • http://www.gorillawalker.com/criminology-and-public-policy-putting-theory-to-work.pdf
    • http://www.gorillawalker.com/a-bevy-of-girls.pdf
    • http://www.gorillawalker.com/spawn-63.pdf
    • http://www.gorillawalker.com/the-icky-bug-alphabet-board-book.pdf
    • http://www.gorillawalker.com/doc-savage-omnibus-2.pdf
    • http://www.gorillawalker.com/porsche-356-defined-a-pictorial-guide.pdf
    • http://www.gorillawalker.com/the-music-of-quincy-jones-trombone.pdf
    • http://www.gorillawalker.com/why-we-ride.pdf
    • http://www.gorillawalker.com/differential-evolution-in-electromagnetics-adaptation-learning-and-optimization.pdf
    • http://www.gorillawalker.com/fiber-reinforced-self-compacting-concrete-rheology-and-compatibility-of-ingredients.pdf
    • http://www.gorillawalker.com/catalogue-of-the-library-at-abbotsford-1838-scottelanea-the-people.pdf
    • http://www.gorillawalker.com/gabriela-mistral-s-struggle-with-god-and-man-a-biographical.pdf
    • http://www.gorillawalker.com/wizard-of-the-four-winds-a-shaman-s-story.pdf
    • http://www.gorillawalker.com/castles-towers-dungeons-moats-and-more.pdf
    • http://www.gorillawalker.com/yankee-stadium-the-final-season.pdf
    • http://www.gorillawalker.com/gaturro-10-spanish-edition.pdf
    • http://www.gorillawalker.com/when-god-doesn-t-heal-now.pdf
    • http://www.gorillawalker.com/simon-s-nursing-assessment-for-the-care-of-older-people.pdf
    • http://www.gorillawalker.com/keepin-it-country-12-song-written-by-walter-weyburn-country.pdf
    • http://www.gorillawalker.com/magic-dogs-of-the-volcanoes-los-perros-magicos-de-los.pdf
    • http://pybrary.net/pyPdf/
    • http://www.gorillawalker.com/seduced-by-the-neighbours
    • 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#
    +1 more URL(s)

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