Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a16b3136d59b1d9…

MALICIOUS

PDF

43.3 KB Created: 2019-03-17 10:25:27 +03:00 Authoring application: Adobe InDesign CS3 (5.0.2) (via Adobe PDF Library 8.0) First seen: 2021-06-28
MD5: 134574e43c954044da97296f09ed0358 SHA-1: 51ae059b334002edd9873050ee0b5da2060cee8d SHA-256: 7a16b3136d59b1d9de7a6fef370e28713d65199912cf90fe57de5cc39e30ea47
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 improve search engine rankings for malicious sites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/sports-and-politics-goodbye-sydney-2000-hallo-athens-2004-an.pdf In PDF document text
    • http://www.gorillawalker.com/computer-methods-in-biomechanics-and-biomedical-engineering-2.pdfIn PDF document text
    • http://www.gorillawalker.com/en-natt-bland-fjellen-s-ngspel-i-tv-akter-fritt.pdfIn PDF document text
    • http://www.gorillawalker.com/dvorak-575-pages-piano-sheet-music-collection-on-cd.pdfIn PDF document text
    • http://www.gorillawalker.com/class-two-at-the-zoo.pdfIn PDF document text
    • http://www.gorillawalker.com/nothing-down-for-the-90s.pdfIn PDF document text
    • http://www.gorillawalker.com/practical-guide-to-sap-co-pc-product-cost-controlling.pdfIn PDF document text
    • http://www.gorillawalker.com/diccionario-grafot-cnico-spanish-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/beretning-om-christianias-almueskole-vaesen-danish-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/how-to-convert-volkswagen-t5-van-to-camper-the-camper.pdfIn PDF document text
    • http://www.gorillawalker.com/fundamental-principles-of-the-metaphysic-of-morals.pdfIn PDF document text
    • http://www.gorillawalker.com/the-two-sources-of-morality-and-religion.pdfIn PDF document text
    • http://www.gorillawalker.com/a-cookbook-for-katie-upon-the-occasion-of-her-marriage.pdfIn PDF document text
    • http://www.gorillawalker.com/cia-camarena-y-c-quintero-spanish-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/market-share-reporter-market-share-reporter-2-vol.pdfIn PDF document text
    • http://www.gorillawalker.com/iso-7860-1995-motorcycles-methods-of-measuring-fuel-consumption.pdfIn PDF document text
    • http://www.gorillawalker.com/foreigners-in-mikadoland-tut-books-h.pdfIn PDF document text
    • http://www.gorillawalker.com/boston-marathon-world-s-greatest-sporting-events.pdfIn PDF document text
    • http://www.gorillawalker.com/the-national-grape-boycott-a-victory-for-farmworkers-snapshots-in.pdfIn PDF document text
    • http://www.gorillawalker.com/kiss-sell-writing-for-advertising-redesigned-rekissed-paperback-common.pdfIn PDF document text
    • http://www.gorillawalker.com/listening-to-salsa-gender-latin-popular-music-and-puerto-rican.pdfIn PDF document text
    • http://www.gorillawalker.com/intonational-phonology-cambridge-studies-in-linguistics.pdfIn PDF document text
    • http://www.gorillawalker.com/martin-genealogy-tied-to-the-history-of-germanna-virginia.pdfIn PDF document text
    • http://www.gorillawalker.com/coffee-diet-blank-recipe-book-your-own-personalized-blank-recipe.pdfIn PDF document text
    • http://www.gorillawalker.com/gmelin-si-silicon-suppl-pt-b-sec-5b-closed-1.pdfIn PDF document text
    • http://www.gorillawalker.com/sight-reading-building-the-foundation-for-trumpet.pdfIn PDF document text
    • http://www.gorillawalker.com/gale-encyclopedia-of-medicine-nutrition-html-digital.pdfIn PDF document text
    • http://www.gorillawalker.com/basics-a-beginner-s-guide-to-stage-lighting.pdfIn PDF document text
    • http://www.gorillawalker.com/running-down-your-dreams.pdfIn PDF document text
    • http://www.gorillawalker.com/edson-s-raiders-the-1st-marine-raider-battalion-in-world.pdfIn PDF document text
    • http://www.gorillawalker.com/graphs-dioids-and-semirings-new-models-and-algorithms-operations-research.pdfIn PDF document text
    • http://www.gorillawalker.com/a-practical-guide-to-real-time-office-sonography-in-obstetrics.pdfIn PDF document text
    • http://www.gorillawalker.com/after-words-real-sex-from-gay-men-s-diaries.pdfIn PDF document text
    • http://www.gorillawalker.com/the-beginning-of-the-gospel-according-to-saint-john-philosophical.pdfIn PDF document text
    • http://www.gorillawalker.com/insect-cell-cultures-fundamental-and-applied-aspects-current-applications-of.pdfIn PDF document text
    • http://www.gorillawalker.com/digging-tunnels-construction-zone.pdfIn PDF document text
    • http://www.gorillawalker.com/schaum-s-outline-of-operations-management.pdfIn PDF document text
    • http://www.gorillawalker.com/origami-from-the-heart-kindle-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/beyond-good-and-evil-prelude-to-a-philosophy-of-the.pdfIn PDF document text
    • http://www.gorillawalker.com/teenage-mutant-ninja-turtles-pop-up-storybook.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

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