Malicious PDF — malware analysis report

Static analysis result for SHA-256 7378f3c0b8c0b32e…

MALICIOUS

PDF

42.0 KB Created: 2019-01-06 08:07:32 +03:00 Authoring application: Arbortext Publishing Engine (via PDFlib+PDI 8.0.2p1 (Win32))
MD5: da47e1503c5b5103f5daa346ae53782a SHA-1: d8c8e8d5f19e1bee1fcdeafd51e41f2923b056b2 SHA-256: 7378f3c0b8c0b32e8d2b69076c23907f72e5b52208e548bfcc6021d19e168949
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, indicating a link farm or SEO abuse tactic. The ML classifier also flagged the document as malicious. The primary attack pattern involves directing users to a large collection of documents hosted on www.gorillawalker.com.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8763

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/the-flip-side.pdf
    • http://www.gorillawalker.com/are-dolphins-really-smart-the-mammal-behind-the-myth.pdf
    • http://www.gorillawalker.com/plan-of-attack-a-novel-brown-dale.pdf
    • http://www.gorillawalker.com/narrative-the-basics.pdf
    • http://www.gorillawalker.com/atlas-of-asian-american-history-carter-g-woodson-honor-book.pdf
    • http://www.gorillawalker.com/savvy-sauces-and-gravies-how-to-make-them-and-use.pdf
    • http://www.gorillawalker.com/el-lugar-m-s-triste-para-so-ar-spanish-edition.pdf
    • http://www.gorillawalker.com/young-zeus.pdf
    • http://www.gorillawalker.com/rock-art-and-ruins-for-beginners-and-old-guys.pdf
    • http://www.gorillawalker.com/plays-from-hispanic-tales-one-act-royalty-free-dramatizations-for.pdf
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    • http://www.gorillawalker.com/bob-ross-volume-viii-the-joy-of-painting.pdf
    • http://www.gorillawalker.com/commentaries-on-plato-volume-2-i-parmenides-i-part-ii.pdf
    • http://www.gorillawalker.com/preceptor-s-handbook-for-pharmacists-cuellar-preceptor-s-handbook-for.pdf
    • http://www.gorillawalker.com/sinbad-a-real-life-reader-biography.pdf
    • http://www.gorillawalker.com/luftwaffe-the-allied-intelligence-files.pdf
    • http://www.gorillawalker.com/ripple-effect-time-thriller-trilogy-book-1-bk-1.pdf
    • http://www.gorillawalker.com/hand-in-hand-complete-set-vol-i-ii-selected-reprints.pdf
    • http://www.gorillawalker.com/the-hollister-school-for-girls.pdf
    • http://www.gorillawalker.com/engineering-properties-of-soils-and-their-measurement.pdf
    • http://www.gorillawalker.com/diary-of-a-minecraft-pig.pdf
    • http://www.gorillawalker.com/trends-in-energy-use-in-industrial-societies-an-overview-routledge.pdf
    • http://www.gorillawalker.com/katharine-and-r-j-reynolds-partners-of-fortune-in-the.pdf
    • http://www.gorillawalker.com/beauties-and-the-birch-a-victorian-erotic-spanking-tale-greystone.pdf
    • http://www.gorillawalker.com/civil-procedure-2014-supplement-university-casebook-series.pdf
    • http://www.gorillawalker.com/personal-history.pdf
    • http://www.gorillawalker.com/yiddish-song-favorites.pdf
    • http://www.gorillawalker.com/herb-ritts-fotografie-portfolio.pdf
    • http://www.gorillawalker.com/optimization-of-bt-cotton-production-assessment-of-effect-of-irrigation.pdf
    • http://www.gorillawalker.com/fluid-mechanics-second-edition-volume-6-course-of-theoretical-physics.pdf
    • http://www.gorillawalker.com/a-walking-guide-to-the-caribbean-from-the-virgin-islands.pdf
    • http://www.gorillawalker.com/drawing-the-line-art-therapy-with-the-difficult-client.pdf
    • http://www.gorillawalker.com/tensor-analysis-on-manifolds-dover-books-on-mathematics-kindle-edition.pdf
    • http://www.gorillawalker.com/stores-and-distribution-management.pdf
    • http://www.gorillawalker.com/tsetse-biology-and-ecology-their-role-in-the-epidemiology-and.pdf
    • http://www.gorillawalker.com/do-this-in-remembrance-of-me-a-ritual-approach-to.pdf
    • http://www.gorillawalker.com/decorative-dolls-houses-original-interiors-for-twenty-five-dolls-houses.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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