Malicious PDF — malware analysis report

Static analysis result for SHA-256 7395dcc557984275…

MALICIOUS

PDF

45.6 KB Created: 2018-11-14 08:37:06 +03:00 Authoring application: Acrobat PDFMaker 9.0 for Word (via Acrobat Distiller 9.0.0 (Windows))
MD5: 9d6e615aa00950f79b0f57164a79d87f SHA-1: 38c1efca54cf38e28b91fbb3b55643cbc9890ef2 SHA-256: 7395dcc5579842751c710c1f97159ec10d17bf362d8af36cdf4ad752549952fe
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that contains a large number of embedded links to external PDF files. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute potentially malicious content. While no scripts were explicitly extracted, the ML classifier and the link farm heuristic strongly suggest malicious intent. The primary attack pattern observed is the distribution of numerous external links, likely as a form of phishing or content distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8634

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/second-linin-jazzmen-of-southwest-louisiana-1900-1950.pdf
    • http://www.gorillawalker.com/a-bad-case-of-tattle-tongue-activity-book.pdf
    • http://www.gorillawalker.com/fat-burner-smoothies-burn-pounds-with-vitamins-minerals-and-nutrients.pdf
    • http://www.gorillawalker.com/why-grace-changes-everything.pdf
    • http://www.gorillawalker.com/belong-modern-plays.pdf
    • http://www.gorillawalker.com/visions-of-the-night-dreams-religion-and-psychology-s-u.pdf
    • http://www.gorillawalker.com/sacred-text-and-interpretation-perspectives-in-orthodox-biblical-studies.pdf
    • http://www.gorillawalker.com/essential-gluten-free-recipes.pdf
    • http://www.gorillawalker.com/leading-out-connecting-people-to-purpose-6-week-bible-study.pdf
    • http://www.gorillawalker.com/the-phone-book-the-latest-high-tech-techniques-and-equipment.pdf
    • http://www.gorillawalker.com/holy-women-holy-men-celebrating-the-saints.pdf
    • http://www.gorillawalker.com/skin-shift.pdf
    • http://www.gorillawalker.com/number-theory-an-elementary-introduction-through-diophantine-problems-monographs-in.pdf
    • http://www.gorillawalker.com/the-definitive-guide-to-captive-insurance-companies-what-every-small.pdf
    • http://www.gorillawalker.com/learning-core-data-for-ios-a-hands-on-guide-to.pdf
    • http://www.gorillawalker.com/applecart-candida-telezhka-s-yablokami-kandida.pdf
    • http://www.gorillawalker.com/massey-ferguson-35-65-models-in-detail.pdf
    • http://www.gorillawalker.com/photoreception-and-vision-in-invertebrates-nato-science-series-a.pdf
    • http://www.gorillawalker.com/science-and-the-indian-tradition-when-einstein-met-tagore-india.pdf
    • http://www.gorillawalker.com/foodservice-refrigeration.pdf
    • http://www.gorillawalker.com/william-morris-romantic-to-revolutionary.pdf
    • http://www.gorillawalker.com/signs-systems-and-meanings-a-contemporary-semiotic-reading-of-four.pdf
    • http://www.gorillawalker.com/the-norton-anthology-of-world-literature-third-edition-vol-d.pdf
    • http://www.gorillawalker.com/watch-officer-s-guide-a-handbook-for-all-deck-watch.pdf
    • http://www.gorillawalker.com/chusei-setsuwa-bungaku-ronko-japanese-edition-tankobon-hardcover.pdf
    • http://www.gorillawalker.com/stonewalled-my-fight-for-truth-against-the-forces-of-obstruction.pdf
    • http://www.gorillawalker.com/brokerage-and-production-in-the-american-and-french-entertainment-industries.pdf
    • http://www.gorillawalker.com/daily-life-of-the-ancient-greeks-the-daily-life-through.pdf
    • http://www.gorillawalker.com/beginnings-in-classical-literature-yale-classical-studies.pdf
    • http://www.gorillawalker.com/world-freemasonry-unveiled-powerwolf-publications.pdf
    • http://www.gorillawalker.com/fundamentals-of-professional-cooking-and-baking.pdf
    • http://www.gorillawalker.com/an-unauthorized-guide-to-the-duggar-family-how-the-stars.pdf
    • http://www.gorillawalker.com/gettysburg-a-guided-tour-through-history-historical-tours.pdf
    • http://www.gorillawalker.com/the-lady-and-the-ministers-night-by-gaslight-book-4.pdf
    • http://www.gorillawalker.com/quick-draw-kindle-edition.pdf
    • http://www.gorillawalker.com/the-white-people-kindle-edition.pdf
    • http://www.gorillawalker.com/the-daughter-in-law-rules-101-surefire-ways-to-make.pdf
    • http://www.gorillawalker.com/the-centurion-at-the-cross-arch-book-arch-books.pdf
    • http://www.gorillawalker.com/sisters-danielle-steel.pdf
    • http://www.gorillawalker.com/mcgraw-hill-s-national-electrical-code-handbook.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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