Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ddeae60965c4d21…

MALICIOUS

PDF

43.8 KB Created: 2019-03-16 19:20:58 +03:00 Authoring application: LaTeX with hyperref package (via pdfTeX-1.40.10)
MD5: 6bcb0de52a297aa2cc14510a87f00065 SHA-1: aa375eead94a76fa1bd072ca6eaedf3130a11fa9 SHA-256: 4ddeae60965c4d2164a6f261461a1ebb361b2beacf99ca3e2783eeda2d968e22
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external websites, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves redirecting users to these external URLs, which could host further malicious content or phishing pages. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/we-fed-them-cactus-paso-por-aqui-series-on-the.pdf
    • http://www.gorillawalker.com/when-words-collide-a-media-writer-s-guide-to-grammar.pdf
    • http://www.gorillawalker.com/new-interpretations-of-ape-and-human-ancestry-advances-in-primatology.pdf
    • http://www.gorillawalker.com/the-assassination-of-martin-luther-king-jr-cornerstones-of-freedom.pdf
    • http://www.gorillawalker.com/hold-you-down-2.pdf
    • http://www.gorillawalker.com/organize-your-start-up-simple-methods-to-help-you-start.pdf
    • http://www.gorillawalker.com/systematic-billiards.pdf
    • http://www.gorillawalker.com/more-bugs-less-bugs-counting-books.pdf
    • http://www.gorillawalker.com/40-fab-organic-recipes-sponsored-by-tate-lyle-kindle-edition.pdf
    • http://www.gorillawalker.com/relax-you-may-only-have-a-few-minutes-left-using.pdf
    • http://www.gorillawalker.com/151-quick-ideas-for-delegating-and-decision-making.pdf
    • http://www.gorillawalker.com/peep-a-little-book-about-taking-a-leap.pdf
    • http://www.gorillawalker.com/certificate-in-financial-planning-3-financial-protection-cf3-i-pass.pdf
    • http://www.gorillawalker.com/wicked-lovely-desert-tales-volume-1-sanctuary.pdf
    • http://www.gorillawalker.com/d-gray-man-2-el-anciano-y-el-aria-de.pdf
    • http://www.gorillawalker.com/cytokeratins-in-intracranial-and-intraspinal-tissues-advances-in-anatomy-embryology.pdf
    • http://www.gorillawalker.com/gone-in-a-flash-murder-mayhem-and-high-frequency-revolt.pdf
    • http://www.gorillawalker.com/drifters-volume-2.pdf
    • http://www.gorillawalker.com/construction-health-and-safety.pdf
    • http://www.gorillawalker.com/comparison-of-conventional-and-organic-farming-systems-in-chitwan-empirical.pdf
    • http://www.gorillawalker.com/arab-and-jew-wounded-spirits-in-a-promised-land.pdf
    • http://www.gorillawalker.com/musical-memories.pdf
    • http://www.gorillawalker.com/felipe-ii-biblioteca-manuel-fernandez-alvarez-spanish-edition.pdf
    • http://www.gorillawalker.com/the-hollywood-film-music-reader.pdf
    • http://www.gorillawalker.com/the-beginning-of-everything-kindle-edition.pdf
    • http://www.gorillawalker.com/the-allergic-snowman-a-children-s-book.pdf
    • http://www.gorillawalker.com/argumentation-and-debate-critical-thinking-for-reasoned-decision-making-wadsworth.pdf
    • http://www.gorillawalker.com/harker-s-one-room-schoolhouses-visions-of-an-iowa-icon.pdf
    • http://www.gorillawalker.com/street-foods-of-bali.pdf
    • http://www.gorillawalker.com/we-are-family-sibling-relationships-in-placement-and-beyond.pdf
    • http://www.gorillawalker.com/marketing-strategies-for-competitive-advantage.pdf
    • http://www.gorillawalker.com/wayne-s-world-extreme-close-up-saturday-night-live.pdf
    • http://www.gorillawalker.com/2015-5-31-japanese-edition.pdf
    • http://www.gorillawalker.com/by-the-book-a-gracie-andersen-mystery.pdf
    • http://www.gorillawalker.com/no-more-bullies-pack-a-nonfiction-picture-books-no-more.pdf
    • http://www.gorillawalker.com/practical-electron-microscopy-shanghai-biomedical-graduate-teaching-books-chinese-edition.pdf
    • http://www.gorillawalker.com/handbook-of-zoonoses-a-hdbk-of-zoonosessection-a-crc-closed.pdf
    • http://www.gorillawalker.com/the-art-of-the-documentary-fifteen-conversations-with-leading-directors.pdf
    • http://www.gorillawalker.com/evil-paradises-dreamworlds-of-neoliberalism.pdf
    • http://www.gorillawalker.com/early-onset-dementia-a-multidisciplinary-approach.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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