Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde0240257b986a9…

MALICIOUS

PDF

43.5 KB Created: 2018-12-15 08:09:47 +03:00 Authoring application: LaTeX with hyperref package (via pdfTeX-1.40.17)
MD5: d04f20bac411ff49e57350294076703b SHA-1: 39acf798dc508a4059b60cf3d0ab5f0fbc124fdf SHA-256: cde0240257b986a959f72ba18da5544083c47161a6ad54536768ebe41812e3eb
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to PDF files on the domain 'gorillawalker.com'. This is indicative of a link farm or SEO manipulation tactic, which can be used to distribute malicious content or improve search engine ranking for malicious sites. The ML classifier also flagged this PDF as malicious.

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/minor-buddhist-text-part-1.pdf
    • http://www.gorillawalker.com/what-does-it-mean-to-be-united-methodist-leader-s.pdf
    • http://www.gorillawalker.com/advanced-mechanics-of-materials-2nd-edition.pdf
    • http://www.gorillawalker.com/gala-day-luncheons-a-little-book-of-suggestions.pdf
    • http://www.gorillawalker.com/i-moved-your-cheese-for-those-who-refuse-to-live.pdf
    • http://www.gorillawalker.com/vampire-berserker.pdf
    • http://www.gorillawalker.com/hydraulics-fifth-edition.pdf
    • http://www.gorillawalker.com/the-logophile-s-orgy.pdf
    • http://www.gorillawalker.com/fighting-art-of-tang-soo-do-unique-literary-books-of.pdf
    • http://www.gorillawalker.com/2015-monthly-planner-vintage-cover-day-planners-organizers-calendars-volume.pdf
    • http://www.gorillawalker.com/language-of-multilateral-diplomacy-english-russian-explanatory-dictionary-russian-edition.pdf
    • http://www.gorillawalker.com/oral-medicine-an-issue-of-otolaryngologic-clinics-1e-the-clinics.pdf
    • http://www.gorillawalker.com/introduction-to-ordinary-differential-equations-4th-edition.pdf
    • http://www.gorillawalker.com/the-architecture-of-frank-lloyd-wright-a-complete-catalog-updated.pdf
    • http://www.gorillawalker.com/angkor-an-introduction-to-the-temples-odyssey-guides.pdf
    • http://www.gorillawalker.com/the-don-juan-legend-before-mozart-with-a-collection-of.pdf
    • http://www.gorillawalker.com/scada-supervisory-control-and-data-acquisition-3rd-edition.pdf
    • http://www.gorillawalker.com/bi-curious-3-trapped.pdf
    • http://www.gorillawalker.com/the-5-biological-laws-the-skin-and-skin-allergies-dr.pdf
    • http://www.gorillawalker.com/conservative-management-of-sports-injuries.pdf
    • http://www.gorillawalker.com/atlas-of-gynecological-surgery.pdf
    • http://www.gorillawalker.com/otologia-otology-spanish-edition.pdf
    • http://www.gorillawalker.com/snoring-from-a-to-zzzz-proven-cures-for-the-night.pdf
    • http://www.gorillawalker.com/a-handbook-of-pastoral-counselling-mowbray-parish-handbooks.pdf
    • http://www.gorillawalker.com/ghost-towns-scary-places.pdf
    • http://www.gorillawalker.com/the-pentateuch-and-old-testament-books-of-history-biblical-foundations.pdf
    • http://www.gorillawalker.com/applied-pharmacology-for-the-dental-hygienist-4th-ed-review-book.pdf
    • http://www.gorillawalker.com/math-mazes-and-more-stick-kids-workbook-grade-1-stick.pdf
    • http://www.gorillawalker.com/the-enculturated-gene-sickle-cell-health-politics-and-biological-difference.pdf
    • http://www.gorillawalker.com/working-at-inventing-thomas-a-edison-and-the-menlo-park.pdf
    • http://www.gorillawalker.com/study-guide-for-1z0-144-oracle-database-11g-program-with.pdf
    • http://www.gorillawalker.com/super-safari-level-1-pupil-s-book-with-dvd-rom.pdf
    • http://www.gorillawalker.com/huey-the-story-of-an-assault-helicopter-pilot-in-vietnam.pdf
    • http://www.gorillawalker.com/cameron-hydraulic-data-a-handy-reference-on-the-subjects-of.pdf
    • http://www.gorillawalker.com/the-singer-s-debussy.pdf
    • http://www.gorillawalker.com/purse-fabric-medium-brown-bible-cover.pdf
    • http://www.gorillawalker.com/beer-advertising-memorabilia.pdf
    • http://www.gorillawalker.com/essentials-pediatric-nursing-ctb.pdf
    • http://www.gorillawalker.com/find-out-about-flight-with-18-projects-and-more-than.pdf
    • http://www.gorillawalker.com/a-shorter-course-of-theoretical-physics-vol-2-quantum-mechanics.pdf
    • http://www.gorillawalker.com
    • 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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