Malicious PDF — malware analysis report

Static analysis result for SHA-256 72331cd4e7f7c61d…

MALICIOUS

PDF

45.2 KB Created: 2019-03-17 02:29:36 +03:00 Authoring application: dvips(k) 5.96 Copyright 2005 Radical Eye Software (via GPL Ghostscript 8.57)
MD5: d5e1fe8d6f3d16d5b0cd359888367e4f SHA-1: 7e75db25b1a72e0a85582fb515c1681ce59d2823 SHA-256: 72331cd4e7f7c61db8077cc836e5236f3a25628598580be101a290c02d81d3e9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files on the domain 'gorillawalker.com'. This behavior is indicative of a link farm or SEO manipulation tactic, which can be used to distribute malicious content or drive traffic to malicious sites. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8812

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/the-i-of-the-beholder-a-guided-journey-to-the.pdf
    • http://www.gorillawalker.com/advances-in-the-diagnosis-and-management-of-barrett-s-esophagus.pdf
    • http://www.gorillawalker.com/grotius-on-the-rights-of-war-and-peace-an-abridged.pdf
    • http://www.gorillawalker.com/forbidden-flowers-more-women-s-sexual-fantasies.pdf
    • http://www.gorillawalker.com/fried-twinkies-buckle-bunnies-bull-riders-a-year-inside-the.pdf
    • http://www.gorillawalker.com/grandes-recetas-con-fideos-descubra-la-versatilidad-de-esta-especialidad.pdf
    • http://www.gorillawalker.com/oriental-rugs-an-illustrated-lexicon-of-motifs-materials-and-origins.pdf
    • http://www.gorillawalker.com/part-2-of-the-month-pomegranate-troupe-1-japanese-edition.pdf
    • http://www.gorillawalker.com/21st-century-dead-a-zombie-anthology.pdf
    • http://www.gorillawalker.com/strain-and-temperature-measurement-with-fiber-optic-sensors.pdf
    • http://www.gorillawalker.com/une-histoire-de-l-homme-sans-fil-d-ariane-essai.pdf
    • http://www.gorillawalker.com/sirens-and-other-daemon-lovers.pdf
    • http://www.gorillawalker.com/early-mesopotamian-law.pdf
    • http://www.gorillawalker.com/99-things-you-wish-you-knew-before-going-to-culinary.pdf
    • http://www.gorillawalker.com/fashionary-a4-womens-edition.pdf
    • http://www.gorillawalker.com/legal-guide-to-web-software-development-book-with-cd-rom.pdf
    • http://www.gorillawalker.com/florida-continuing-education-for-florida-real-estate-professionals-twelfth-edition.pdf
    • http://www.gorillawalker.com/practical-aspects-of-munchausen-by-proxy-and-munchausen-syndrome-investigation.pdf
    • http://www.gorillawalker.com/uncommon-emotions.pdf
    • http://www.gorillawalker.com/savage-dragon-united-we-stand-tp-savage-dragon-unnumbered.pdf
    • http://www.gorillawalker.com/helping-angry-people-a-short-term-structured-model-for-pastoral.pdf
    • http://www.gorillawalker.com/feuerbach-the-roots-of-the-socialist-philosophy.pdf
    • http://www.gorillawalker.com/our-life-with-jesus-book-3-teacher-s-manual.pdf
    • http://www.gorillawalker.com/made-in-paradise-hollywood-s-films-of-hawaii-and-the.pdf
    • http://www.gorillawalker.com/deader-by-the-lake-a-reno-mccarthy-thriller.pdf
    • http://www.gorillawalker.com/chemistry-and-biology-volume-51-the-alkaloids.pdf
    • http://www.gorillawalker.com/brinestain-and-biscuit-recipes-and-rules-for-royal-navy-cooks.pdf
    • http://www.gorillawalker.com/alexander-the-great-lancaster-pamphlets-in-ancient-history.pdf
    • http://www.gorillawalker.com/jimi-hendrix-electric-ladyland-guitar-recorded-version-songbook-tab.pdf
    • http://www.gorillawalker.com/modernity-and-the-holocaust.pdf
    • http://www.gorillawalker.com/ethics-in-practice-an-anthology.pdf
    • http://www.gorillawalker.com/transformers-hunt-for-the-decepticons-buddy-brawl-i-can-read.pdf
    • http://www.gorillawalker.com/the-flying-stars-and-the-invisible-man-father-brown-series.pdf
    • http://www.gorillawalker.com/a-sister-s-secret-sisters-of-holmes-county-book-1.pdf
    • http://www.gorillawalker.com/the-chimp-diet-taking-paleo-one-step-further-to-natural.pdf
    • http://www.gorillawalker.com/my-c-c-c-days-memories-of-the-civilian-conservation.pdf
    • http://www.gorillawalker.com/mountain-main-visual-journey-into-the-beauty-of-the-sawtooth.pdf
    • http://www.gorillawalker.com/am-i-the-last-virgin-ten-african-american-reflections-on.pdf
    • http://www.gorillawalker.com/aldrich-family-oldtime-radio-rotating-parties-and-babysitting-audio-cd.pdf
    • http://www.gorillawalker.com/neural-networks-and-micromechanics.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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