Malicious PDF — malware analysis report

Static analysis result for SHA-256 3317f5b32f1668ab…

MALICIOUS

PDF

41.8 KB Created: 2019-01-06 08:24:29 +03:00 Authoring application: LaTeX with hyperref and pdfscreen (via Mac OS X 10.5.7 Quartz PDFContext)
MD5: 1d6ae65ce5b5d4e822106db27c1a5771 SHA-1: b6b5accd7210661dd88e6bca61649e66dbbcfdce SHA-256: 3317f5b32f1668ab0eb9a69ab41aec967892497a552adf18152a365f5fe0e7a2
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 to external PDF files, a technique often used for SEO manipulation or to hide 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 generate traffic or distribute other malicious content via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/health-promotion-in-nursing.pdf
    • http://www.gorillawalker.com/sophie-carter.pdf
    • http://www.gorillawalker.com/shhhh.pdf
    • http://www.gorillawalker.com/the-architectural-expression-of-environmental-control-systems.pdf
    • http://www.gorillawalker.com/spencer-scientific-instruments-with-pricelist-and-errata.pdf
    • http://www.gorillawalker.com/gymnastics-training-and-fitness.pdf
    • http://www.gorillawalker.com/arif-mufid-mansel-s-excavations-of-tumuli-in-turkish-thrace.pdf
    • http://www.gorillawalker.com/by-robert-brown-butler-standard-handbook-of-architectural-engineering-1st.pdf
    • http://www.gorillawalker.com/toyota-way-14-management-principles-from-the-world-s-greatest.pdf
    • http://www.gorillawalker.com/the-unfaithful-queen-a-novel-of-henry-viii-s-fifth.pdf
    • http://www.gorillawalker.com/board-basics-3.pdf
    • http://www.gorillawalker.com/group-theory-and-chemistry-dover-books-on-chemistry.pdf
    • http://www.gorillawalker.com/best-damn-garage-in-town-my-life-adventures.pdf
    • http://www.gorillawalker.com/will-shortz-presents-the-little-luxe-book-of-sudoku-335.pdf
    • http://www.gorillawalker.com/danielle-steel-44-charles-street-and-first-sight-2-in.pdf
    • http://www.gorillawalker.com/cheetah-animals-in-danger.pdf
    • http://www.gorillawalker.com/edgar-holden-m-d-of-newark-new-jersey-provincial-physician.pdf
    • http://www.gorillawalker.com/modern-chess-openings-mco-14-mckay-chess-library.pdf
    • http://www.gorillawalker.com/built-to-sell-turn-your-business-into-one-you-can.pdf
    • http://www.gorillawalker.com/walter-wants-to-be-a-werewolf-chomps.pdf
    • http://www.gorillawalker.com/assessment-and-case-formulation-in-cognitive-behavioural-therapy.pdf
    • http://www.gorillawalker.com/graph-theory-3rd-edition.pdf
    • http://www.gorillawalker.com/life-christmas-around-the-world-life-life-books.pdf
    • http://www.gorillawalker.com/sparkle-princess-picture-me-board-book-series.pdf
    • http://www.gorillawalker.com/beautiful-mandalas-patterns-to-color-for-adults-sacred-mandala-designs.pdf
    • http://www.gorillawalker.com/combat-mission-barbarossa-to-berlin-strategy-guide.pdf
    • http://www.gorillawalker.com/artistic-table-setting.pdf
    • http://www.gorillawalker.com/anwar-sadat-mwl-major-world-leaders.pdf
    • http://www.gorillawalker.com/pakistan-fifty-years-of-independence.pdf
    • http://www.gorillawalker.com/elephants-child-and-other-stories-10-minute-children-s-stories.pdf
    • http://www.gorillawalker.com/the-penalty.pdf
    • http://www.gorillawalker.com/the-present-malory-novels.pdf
    • http://www.gorillawalker.com/fascia-the-tensional-network-of-the-human-body-the-science.pdf
    • http://www.gorillawalker.com/structural-concepts-and-techniques-iii-detached-deformation-treatise-of-petroleum.pdf
    • http://www.gorillawalker.com/the-really-useful-maths-book-a-guide-to-interactive-teaching.pdf
    • http://www.gorillawalker.com/pueblo-indian-1998-calendar.pdf
    • http://www.gorillawalker.com/tesoros-escondidos-spanish-edition.pdf
    • http://www.gorillawalker.com/a-section-of-a-battle-observations-upon-the-conduct-of.pdf
    • http://www.gorillawalker.com/galactic-empire-wars-emergence-the-galactic-empire-wars-book-2.pdf
    • http://www.gorillawalker.com/communist-manifesto-wages-price-and-profit-capital-socialism-utopian-and.pdf
    • http://www.gorillawalker.com/toyota-way-14-management-principles-from-the-
    • 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/

Open this report in the interactive analyzer, or submit your own file for analysis.