Malicious PDF — malware analysis report

Static analysis result for SHA-256 b625e74ea3d865fe…

MALICIOUS

PDF

30.8 KB Created: 2020-01-26 18:43:08 +03:00 Authoring application: Adobe Acrobat Pro 10.0.0 (via ESP Ghostscript 7.07)
MD5: 1e2abf5ff276ecfca2ccffcf2689af11 SHA-1: be8e968458a102490759a8fd8a34e661757bcad9 SHA-256: b625e74ea3d865feef3f46b5a3021deb46e4321aab3b33aeff4b1e6cf6b519fd
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files hosted on 'www.gorillawalker.com'. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was unreadable, but the heuristic 'PDF_SEO_LINK_FARM' strongly suggests the intent is to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8442

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/passport-to-intermediate-algebra.pdf
    • http://www.gorillawalker.com/hitler-s-heralds-story-of-the-freikorps-1918-1923.pdf
    • http://www.gorillawalker.com/physics-of-the-human-body.pdf
    • http://www.gorillawalker.com/crush-a-girls-of-summer-novel-the-girls-of-summer.pdf
    • http://www.gorillawalker.com/doctor-who-the-making-of-a-television-serial-puffin-books.pdf
    • http://www.gorillawalker.com/the-primo-vascular-system-its-role-in-cancer-and-regeneration.pdf
    • http://www.gorillawalker.com/inspection-the-repopulation-project.pdf
    • http://www.gorillawalker.com/age-determination-of-young-rocks-and-artifacts-physical-and-chemical.pdf
    • http://www.gorillawalker.com/modern-ink-the-art-of-qi-baishi.pdf
    • http://www.gorillawalker.com/china-joint-venture-construction-start-up-on-planned-125-000.pdf
    • http://www.gorillawalker.com/let-s-look-at-trains-let-s-look-at-series.pdf
    • http://www.gorillawalker.com/oleanna.pdf
    • http://www.gorillawalker.com/anthony-and-the-ants-meadowside-picture-book.pdf
    • http://www.gorillawalker.com/moscas-y-dragones-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/the-2kh-formula-how-to-instantly-write-at-least-2.pdf
    • http://www.gorillawalker.com/complete-home-bartender-s-guide-780-recipes-for-the-perfect.pdf
    • http://www.gorillawalker.com/tricolore-total-2-copymasters-and-assessment.pdf
    • http://www.gorillawalker.com/dear-journal.pdf
    • http://www.gorillawalker.com/auctioned-georgie-sands-book-3.pdf
    • http://www.gorillawalker.com/when-your-friend-dies.pdf
    • http://www.gorillawalker.com/a-principality-of-its-own-40-years-of-visual-arts.pdf
    • http://www.gorillawalker.com/sunshine-religious-stories-buddhist-faith-pack.pdf
    • http://www.gorillawalker.com/anne-mie-van-kerckhoven.pdf
    • http://www.gorillawalker.com/the-complete-book-of-ballroom-dancing.pdf
    • http://www.gorillawalker.com/topological-methods-in-data-analysis-and-visualization-iii-theory-algorithms.pdf
    • http://www.gorillawalker.com/seville-walking-tour-walking-tours-book-890-kindle-edition.pdf
    • http://www.gorillawalker.com/celebgate-the-fappening.pdf
    • http://www.gorillawalker.com/horse-massage-for-horse-owners-improve-your-horse-s-health.pdf
    • http://www.gorillawalker.com/service-offerings-and-agreements-a-guide-for-itil-exam-candidates.pdf
    • http://www.gorillawalker.com/singapore-eyewitness-travel-guides.pdf
    • http://www.gorillawalker.com/thai-english-english-thai-dictionary-and-phrasebook-dictionary-and-phrasebooks.pdf
    • http://www.gorillawalker.com/u-boat-war-in-the-atlantic-1939-1945-german-naval.pdf
    • http://www.gorillawalker.com/capillary-zone-electrophoresis-electrophoresis-library.pdf
    • http://www.gorillawalker.com/elementary-and-middle-school-mathematics-teaching-developmentally-fifth-edition.pdf
    • http://www.gorillawalker.com/beltrami-fields-in-chiral-media-world-scientific-series-in-contemporary.pdf
    • http://www.gorillawalker.com/dynamic-process-methodology-in-the-social-and-developmental-sciences.pdf
    • http://www.gorillawalker.com/two-awesome-hours-science-based-strategies-to-harness-your-best.pdf
    • http://www.gorillawalker.com/catboats-second-edition.pdf
    • http://www.gorillawalker.com/sunset-tai-chi-simplified-tai-chi-for-relaxation-and-longevity.pdf
    • http://www.gorillawalker.com/anglo-saxon-art.pdf
    • http://www.gorillawalker.com/china-joint-venture-construction-start-up-on-planned-1
    • 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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