Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef1a004ef41cb10…

MALICIOUS

PDF

43.4 KB Created: 2019-03-17 13:11:38 +03:00 Authoring application: TeX (via pdfTeX-1.40.9)
MD5: 5c45b77456d0f670d8de9dacc45b2a5a SHA-1: d6bd2433381d1d63daa3cf02a932d04af301e03d SHA-256: 6ef1a004ef41cb10d3ef78f67b05cc00e8d821719a590108c732a0601d52adba
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files on the 'gorillawalker.com' domain. The ML classifier also flagged this PDF as malicious. The primary function appears to be directing users to a link farm, potentially for SEO manipulation or to serve as a distribution point for other malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8843

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/how-to-talk-so-your-husband-will-listen-and-listen.pdf
    • http://www.gorillawalker.com/i-am-courageous-character-values.pdf
    • http://www.gorillawalker.com/jun-fan-jeet-kune-do-scientific-streetfighting.pdf
    • http://www.gorillawalker.com/massachusetts-our-home.pdf
    • http://www.gorillawalker.com/kinetic-energy-recovery-systems-for-racing-cars-progress-in-technology.pdf
    • http://www.gorillawalker.com/ecg-interpretation-for-everyone-an-on-the-spot-guide.pdf
    • http://www.gorillawalker.com/steam-train-dream-train-counting.pdf
    • http://www.gorillawalker.com/a-practical-guide-to-gis-in-autocad-civil-3d-2015.pdf
    • http://www.gorillawalker.com/new-the-bridge-entry-books-1-five-flowers-natural-bid.pdf
    • http://www.gorillawalker.com/the-back-of-beyond-a-story-about-lewis-and-clark.pdf
    • http://www.gorillawalker.com/trivia-for-tots-trivia-para-peques-in-a-jar-questions.pdf
    • http://www.gorillawalker.com/essential-songs-for-clarinet-hal-leonard-essential-songs.pdf
    • http://www.gorillawalker.com/eye-of-the-beholder-attis-gallagher-psychic-book-1.pdf
    • http://www.gorillawalker.com/defeating-tinnitus-the-return-to-wholeness-kindle-edition.pdf
    • http://www.gorillawalker.com/atlas-de-anatomia-atlas-of-anatomy-prometheus-spanish-edition.pdf
    • http://www.gorillawalker.com/paediatric-nursing-procedures.pdf
    • http://www.gorillawalker.com/advances-in-imaging-and-electron-physics-optics-of-charged-particle.pdf
    • http://www.gorillawalker.com/organic-reactions-volume-83.pdf
    • http://www.gorillawalker.com/historic-wintersburg-in-huntington-beach-brief-history.pdf
    • http://www.gorillawalker.com/the-bible-of-karate-bubishi.pdf
    • http://www.gorillawalker.com/knit-christmas-stockings-2nd-edition-19-patterns-for-stockings-ornaments.pdf
    • http://www.gorillawalker.com/anatomy-physiology-and-pathophysiology-for-allied-health.pdf
    • http://www.gorillawalker.com/pam-s-trip-to-the-park-the-sound-of-p.pdf
    • http://www.gorillawalker.com/bacterial-polysaccharides-current-innovations-and-future-trends.pdf
    • http://www.gorillawalker.com/a-heartbeat-and-a-guitar-johnny-cash-and-the-making.pdf
    • http://www.gorillawalker.com/proteins-a-theoretical-perspective-of-dynamics-structure-and-thermodynamics.pdf
    • http://www.gorillawalker.com/religion-and-politics-in-russia-a-reader.pdf
    • http://www.gorillawalker.com/abc-of-breast-diseases.pdf
    • http://www.gorillawalker.com/vibrationally-mediated-photodissociation-rsc.pdf
    • http://www.gorillawalker.com/his-life-is-mine.pdf
    • http://www.gorillawalker.com/under-western-eyes-india-from-milton-to-macaulay-post-contemporary.pdf
    • http://www.gorillawalker.com/mccall-s-cooking-school-recipe-card-eggs-cheese-10-red.pdf
    • http://www.gorillawalker.com/by-steamer-to-the-argyllshire-coast-kindle-edition.pdf
    • http://www.gorillawalker.com/quantification-in-signal-processing-for-magnetic-resonance-spectroscopy-digital.pdf
    • http://www.gorillawalker.com/pediatric-home-care-manual-home-care-manuals.pdf
    • http://www.gorillawalker.com/job-proverbios-eclesiastes-y-cantar-de-los-cantares-job-proverbs.pdf
    • http://www.gorillawalker.com/the-strong-one-plus-one-parties-book-1.pdf
    • http://www.gorillawalker.com/electrophoresis-techniques-pt-a-survey-of-techniques-and-applications-journal.pdf
    • http://www.gorillawalker.com/a-raindrop-s-journey-follow-it.pdf
    • http://www.gorillawalker.com/linguistic-categorization-oxford-textbooks-in-linguistics.pdf
    • 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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