Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b0f8fe07dd4021…

MALICIOUS

PDF

42.2 KB Created: 2019-04-06 10:14:31 +03:00 Authoring application: - (via Acrobat Distiller 7.0.5 (Windows))
MD5: 543072f9750efec295059bdbf73f9132 SHA-1: e9a2f2aa282671ddff66f6b2940f92510bfa166d SHA-256: b3b0f8fe07dd4021701fc6c68c02a9e1e6e61b583346bd8b5fe8ad830b8829ee
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier as malicious and contains a large number of embedded links to external PDF files hosted on 'gorillawalker.com'. This suggests a link farm or SEO poisoning attack, where the document's primary purpose is to distribute these external links, potentially leading to further malicious content or phishing sites. No scripts were extracted from this sample.

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/dynamic-asset-pricing-theory-first-edition.pdf
    • http://www.gorillawalker.com/international-capital-markets-studies-in-financial-economics.pdf
    • http://www.gorillawalker.com/time-to-change-grazing-genetics-management.pdf
    • http://www.gorillawalker.com/leadership-by-encouragement-st-lucie.pdf
    • http://www.gorillawalker.com/the-barefoot-running-book-the-art-and-science-of-barefoot.pdf
    • http://www.gorillawalker.com/meeting-of-styles-on-the-run-books.pdf
    • http://www.gorillawalker.com/n-e-s-t-approach-dementia-practice-guidelines-for-disturbing.pdf
    • http://www.gorillawalker.com/essentials-of-human-resource-management-in-health-service-organizations-helps.pdf
    • http://www.gorillawalker.com/shape-magazine-november-2008-kelly-ripa-gina-carano-s-20.pdf
    • http://www.gorillawalker.com/taxes-taxes-where-the-money-goes-money-matters.pdf
    • http://www.gorillawalker.com/a-rank-usurpation-of-power-the-role-of-patriarchal-religion.pdf
    • http://www.gorillawalker.com/going-paleo-on-a-budget-21-days-to-primal-living.pdf
    • http://www.gorillawalker.com/what-on-earth-have-i-done-first-edition.pdf
    • http://www.gorillawalker.com/1-best-tools-and-tips-from-the-trenches-of-breast.pdf
    • http://www.gorillawalker.com/disp-iur-de-iudicio-summario-peregrinorum-germ-vom-gast-recht.pdf
    • http://www.gorillawalker.com/the-two-grenadiers-op-49-no-1-for-horn-in.pdf
    • http://www.gorillawalker.com/candida-killing-so-sweetly-proven-home-remedies-to-conquer-fungus.pdf
    • http://www.gorillawalker.com/lisp-objects-and-symbolic-programming.pdf
    • http://www.gorillawalker.com/geographies-of-rhythm.pdf
    • http://www.gorillawalker.com/direct-methods-for-sparse-matrices-numerical-mathematics-and-scientific-computation.pdf
    • http://www.gorillawalker.com/the-2011-import-and-export-market-for-blankets-and-traveling.pdf
    • http://www.gorillawalker.com/euthanasia-a-christian-perspective-studies-in-current-issues.pdf
    • http://www.gorillawalker.com/carbohydrate-addict-s-fat-counter.pdf
    • http://www.gorillawalker.com/children-who-have-lived-before-reincarnation-today.pdf
    • http://www.gorillawalker.com/social-welfare-policy-and-social-programs-a-values-perspective.pdf
    • http://www.gorillawalker.com/hist.pdf
    • http://www.gorillawalker.com/the-pianist-s-guide-to-pedaling-midland-book.pdf
    • http://www.gorillawalker.com/i-wonder-why-the-pyramids-were-built-and-other-questions.pdf
    • http://www.gorillawalker.com/bangladesh-constitution-and-citizenship-laws-handbook-strategic-information-and-basic.pdf
    • http://www.gorillawalker.com/moral-fire-musical-portraits-from-america-s-fin-de-si.pdf
    • http://www.gorillawalker.com/sylvia-s-marriage.pdf
    • http://www.gorillawalker.com/data-and-probability-connections-mathematics-for-middle-school-teachers.pdf
    • http://www.gorillawalker.com/management.pdf
    • http://www.gorillawalker.com/cruise.pdf
    • http://www.gorillawalker.com/beyond-the-breaking-point-volume-1.pdf
    • http://www.gorillawalker.com/becoming-girls.pdf
    • http://www.gorillawalker.com/total-quality-a-user-s-guide-for-implementation-addison-wesley.pdf
    • http://www.gorillawalker.com/spain-portugal-europe-english-portuguese-spanish-french-and-german-edition.pdf
    • http://www.gorillawalker.com/high-power-laser-interactions.pdf
    • http://www.gorillawalker.com/essentials-of-human-resource-management
    • 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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