Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f4060de4732186d…

MALICIOUS

PDF

43.2 KB Created: 2019-04-30 15:58:13 +03:00 Authoring application: - (via iText 2.1.7 by 1T3XT)
MD5: 29e7bf2109a8a31f317aaeeab72c8ece SHA-1: 82c904a1ac1f02d552f085d6da30eaf98c3fe44f SHA-256: 6f4060de4732186d7a0adf8b30d9d322cf44b03cf65bb201495208272a33edc8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, primarily hosted on gorillawalker.com. This behavior is indicative of a link farm or SEO manipulation tactic. While no specific malicious script was extracted, the sheer volume and nature of the links suggest an intent to direct users to potentially harmful content or to manipulate search engine rankings. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8683

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/dragonwyck-kindle-edition.pdf
    • http://www.gorillawalker.com/words-in-the-mind-an-introduction-to-the-mental-lexicon.pdf
    • http://www.gorillawalker.com/justice-league-the-best-memes-and-jokes.pdf
    • http://www.gorillawalker.com/twelve-sermons-on-the-holy-spirit-kindle-edition.pdf
    • http://www.gorillawalker.com/outwitting-osteoporosis-the-smart-woman-s-guide-to-bone-health.pdf
    • http://www.gorillawalker.com/modern-architecture-since-1900-3th-third-edition.pdf
    • http://www.gorillawalker.com/the-legacy-of-mesoamerica-history-and-culture-of-a-native.pdf
    • http://www.gorillawalker.com/property-casualty-insurance-accounting-sixth-edition.pdf
    • http://www.gorillawalker.com/maturity-in-christ-a-christian-s-handbook-book-3.pdf
    • http://www.gorillawalker.com/traditional-details-for-building-restoration-renovation-and-rehabilitation-from-the.pdf
    • http://www.gorillawalker.com/sounding-off.pdf
    • http://www.gorillawalker.com/ariadne-florentina-six-lectures-on-wood-and-metal-engraving.pdf
    • http://www.gorillawalker.com/how-to-get-fired-the-new-employee-s-guide-to.pdf
    • http://www.gorillawalker.com/reading-the-rabbit-explorations-in-warner-bros-animation.pdf
    • http://www.gorillawalker.com/new-trends-in-nanotechnology-and-fractional-calculus-applications.pdf
    • http://www.gorillawalker.com/shadow-walk.pdf
    • http://www.gorillawalker.com/andante-from-quintette-op-109-407-mozart-french-horn-solo.pdf
    • http://www.gorillawalker.com/trifles.pdf
    • http://www.gorillawalker.com/a-manual-greek-lexicon-of-the-new-testament.pdf
    • http://www.gorillawalker.com/illinois-evidence-rules-courtroom-quick-reference-2015.pdf
    • http://www.gorillawalker.com/an-invitation-to-health-choosing-to-change-available-titles-cengagenow.pdf
    • http://www.gorillawalker.com/spanish-grades-k-5-elementary-skills-for-success.pdf
    • http://www.gorillawalker.com/petroleum-refinery-process-economics.pdf
    • http://www.gorillawalker.com/tobacco-teen-issues-heinemann.pdf
    • http://www.gorillawalker.com/neutral-models-in-biology.pdf
    • http://www.gorillawalker.com/99-to-1-how-wealth-inequality-is-wrecking-the-world.pdf
    • http://www.gorillawalker.com/turning-suffering-inside-out.pdf
    • http://www.gorillawalker.com/blank-confession.pdf
    • http://www.gorillawalker.com/musical-instruments-of-the-world-an-illustrated-encyclopedia-with-more.pdf
    • http://www.gorillawalker.com/the-health-care-data-guide-learning-from-data-for-improvement.pdf
    • http://www.gorillawalker.com/zombie-squad-a-post-apocalyptic-thriller.pdf
    • http://www.gorillawalker.com/art-panels-from-the-hand-looms-of-the-far-orient.pdf
    • http://www.gorillawalker.com/the-royal-family-unseen-archives.pdf
    • http://www.gorillawalker.com/new-palauan-english-dictionary-pali-language-texts-micronesia.pdf
    • http://www.gorillawalker.com/me-medicine-vs-we-medicine-reclaiming-biotechnology-for-the-common.pdf
    • http://www.gorillawalker.com/outdoor-rooms-ideas-for-fresh-air-kitchens-and-living-areas.pdf
    • http://www.gorillawalker.com/governing-america.pdf
    • http://www.gorillawalker.com/sunflower-landscapes-of-sardinia-a-countryside-quide-landscapes.pdf
    • http://www.gorillawalker.com/desert-screen-war-at-the-speed-of-light-impacts.pdf
    • http://www.gorillawalker.com/mrs-jones-says-mrs-jones-says-is-a-collection-of.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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