Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e3445fa46c5081…

MALICIOUS

PDF

43.8 KB Created: 2018-11-26 20:27:23 +03:00 Authoring application: dvips(k) 5.993 Copyright 2013 Radical Eye Software (via GPL Ghostscript 9.07)
MD5: 397cad832c78d469b02a46f36e97834a SHA-1: e4b74c5694cdecfa90e231cf981aae7e67d3ff4e SHA-256: d3e3445fa46c5081885713710d5dacdbd23fd3b14cf017ba35409e6b167bee96
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body is heavily obfuscated and unreadable, but the presence of numerous links to PDFs on the same domain suggests a coordinated effort to distribute content or manipulate search engine results. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9016

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/making-the-farm-pay.pdf
    • http://www.gorillawalker.com/rescuing-rover-saving-america-s-dogs.pdf
    • http://www.gorillawalker.com/the-conflict-and-communication-activity-book-30-high-impact-training.pdf
    • http://www.gorillawalker.com/secrets-of-a-baby-nurse-how-to-have-a-happy.pdf
    • http://www.gorillawalker.com/2011-construction-division-national-licensing-examination-test-sites-memo-electrical.pdf
    • http://www.gorillawalker.com/historic-amusement-parks-of-baltimore-an-illustrated-history.pdf
    • http://www.gorillawalker.com/love-ten-poems-paperback.pdf
    • http://www.gorillawalker.com/pistachio-dessert-recipes-kindle-edition.pdf
    • http://www.gorillawalker.com/carcinoma-of-the-kidney-and-testis-and-rare-urologic-malignancies.pdf
    • http://www.gorillawalker.com/privacy-law-enforcement-and-national-security-aspen-select-aspen-casebook.pdf
    • http://www.gorillawalker.com/elephant-tisha-b-av-jewish-nature-volume-4.pdf
    • http://www.gorillawalker.com/stress-family-robinson-2.pdf
    • http://www.gorillawalker.com/eva-peron-first-lady-of-argentina-signature-lives-modern-world.pdf
    • http://www.gorillawalker.com/personal-relations-theory-fairbairn-macmurray-and-suttie.pdf
    • http://www.gorillawalker.com/preventive-counseling-helping-people-to-become-empowered-in-systems-and.pdf
    • http://www.gorillawalker.com/deep-brain-stimulation-in-neurological-and-psychiatric-disorders-current-clinical.pdf
    • http://www.gorillawalker.com/you-your-jaguar-xk8-buying-enjoying-maintaining-modifying-you-and.pdf
    • http://www.gorillawalker.com/mga-huling-araw-the-last-days-of-angeles.pdf
    • http://www.gorillawalker.com/automotivacion-spanish-edition.pdf
    • http://www.gorillawalker.com/the-corgi-games-illustrated-doggerel.pdf
    • http://www.gorillawalker.com/the-random-house-book-of-nursery-stories.pdf
    • http://www.gorillawalker.com/life-and-letters-of-the-rev-john-philip-boehm-founder.pdf
    • http://www.gorillawalker.com/fungi-of-switzerland-a-contribution-to-the-knowledge-of-the.pdf
    • http://www.gorillawalker.com/michael-buble-the-biography.pdf
    • http://www.gorillawalker.com/impro-for-storytellers.pdf
    • http://www.gorillawalker.com/journal-of-vertebrate-paleontology-december-1998-1998-journal-of-vertebrate.pdf
    • http://www.gorillawalker.com/basic-business-statistics-concepts-and-applications.pdf
    • http://www.gorillawalker.com/fiduciary-loyalty-protecting-the-due-performance-of-non-fiduciary-duties.pdf
    • http://www.gorillawalker.com/understanding-theology-volume-1.pdf
    • http://www.gorillawalker.com/children-can-outgrow-peanut-allergy-risk-of-recurrence-low-an.pdf
    • http://www.gorillawalker.com/the-waterboy-and-the-wolfpack.pdf
    • http://www.gorillawalker.com/sehrli-yumurta-ve-diger-hekayeler-the-magic-egg-and-other.pdf
    • http://www.gorillawalker.com/stories-from-the-polycule-real-life-in-polyamorous-families.pdf
    • http://www.gorillawalker.com/the-quilt-story-turtleback-school-library-binding-edition.pdf
    • http://www.gorillawalker.com/a-guide-to-basic-econometric-techniques.pdf
    • http://www.gorillawalker.com/the-united-states-and-coercive-diplomacy.pdf
    • http://www.gorillawalker.com/avro-vulcan-manual.pdf
    • http://www.gorillawalker.com/101-frequently-asked-questions-about-homosexuality.pdf
    • http://www.gorillawalker.com/an-introduction-to-practical-laboratory-optics.pdf
    • http://www.gorillawalker.com/financial-statements-analysis-volume-1.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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