Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb0e8af1dd703eb…

MALICIOUS

PDF

42.4 KB Created: 2019-02-14 08:12:56 +03:00 Authoring application: Adobe Acrobat 7.05 (via Adobe Acrobat 7.05 Paper Capture Plug-in)
MD5: 4448b6cd002a7f629b901412f056352f SHA-1: 9ee88123b64268a11c9fc4c60e28f00698ee7574 SHA-256: 1fb0e8af1dd703eb37f9ceaef5c1ba28735af9b15b7a31b99c8edf0774f6c918
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF was flagged by a machine learning classifier as malicious. A critical heuristic identified a large number of embedded external links, suggesting a link farm or SEO manipulation tactic. While no scripts were extracted, the sheer volume of links points towards an attempt to either distribute malicious content or engage in search engine poisoning. The embedded URLs are likely part of this scheme.

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/the-theory-of-superconductivity-by-bogoliubov-n-n-nikola-i.pdf
    • http://www.gorillawalker.com/fidel-s-cuba-a-revolution-in-pictures.pdf
    • http://www.gorillawalker.com/la-nubia-e-il-sudan-geografia-geologia-idrografia-atmosferologia-morfologia.pdf
    • http://www.gorillawalker.com/andrew-jackson-as-a-public-man-what-he-was-what.pdf
    • http://www.gorillawalker.com/haunted-university-kindle-edition.pdf
    • http://www.gorillawalker.com/lisa-fashionista-on-martha-s-vineyard.pdf
    • http://www.gorillawalker.com/us-army-technical-manual-tm-5-856-1-design-of.pdf
    • http://www.gorillawalker.com/the-poetics-of-space-kindle-edition.pdf
    • http://www.gorillawalker.com/gymnastics-fun-games.pdf
    • http://www.gorillawalker.com/estonia-a-ramble-through-the-periphery.pdf
    • http://www.gorillawalker.com/flash-fiction-international-very-short-stories-from-around-the-world.pdf
    • http://www.gorillawalker.com/surrendered-and-untamed-dvd-awaken-your-soul-at-the-edge.pdf
    • http://www.gorillawalker.com/a-journey-to-iceland-and-travels-in-sweden-and-norway.pdf
    • http://www.gorillawalker.com/word-sworth-a-fiction-writer-s-guide-to-serious-editing.pdf
    • http://www.gorillawalker.com/the-red-book-the-membership-list-of-the-right-club.pdf
    • http://www.gorillawalker.com/canadian-geographic-canadian-parks-mini-wall-calendar-2015.pdf
    • http://www.gorillawalker.com/sacred-chronology-of-the-hebrew-kings-a-harmony-of-the.pdf
    • http://www.gorillawalker.com/encyclopedia-of-consumer-brands-durable-goods-encyclopedia-of-consumer-brands.pdf
    • http://www.gorillawalker.com/understanding-sickle-cell-disease-understanding-health-and-sickness-series.pdf
    • http://www.gorillawalker.com/the-illusion-of-the-end.pdf
    • http://www.gorillawalker.com/handbook-of-liquids-assisted-laser-processing.pdf
    • http://www.gorillawalker.com/scenic-walks-in-killarney-a-walking-guide.pdf
    • http://www.gorillawalker.com/benchmark-tasks-for-job-analysis-a-guide-for-functional-job.pdf
    • http://www.gorillawalker.com/art-of-close-up-magic.pdf
    • http://www.gorillawalker.com/batman-is-brave-dc-board-books.pdf
    • http://www.gorillawalker.com/shades-of-grey-dulcie-schwartz.pdf
    • http://www.gorillawalker.com/book-of-meetings-2013.pdf
    • http://www.gorillawalker.com/privacy-impact-assessment-law-governance-and-technology-series.pdf
    • http://www.gorillawalker.com/valuing-wall-street-protecting-wealth-in-turbulent-markets.pdf
    • http://www.gorillawalker.com/before-antietam-the-battle-for-south-mountain.pdf
    • http://www.gorillawalker.com/hold-on-my-heart.pdf
    • http://www.gorillawalker.com/futurescan-2015-healthcare-trends-and-implications-2015-2020-futurescan-healthcare.pdf
    • http://www.gorillawalker.com/the-1980-j-r-r-tolkien-calendar-the-great-illustrators.pdf
    • http://www.gorillawalker.com/fortran-programming-success-in-a-day-beginners-guide-to-fast.pdf
    • http://www.gorillawalker.com/what-we-believe-leader-s-guide-part-2-sessions-13.pdf
    • http://www.gorillawalker.com/assignments-to-accompany-the-use-of-legal-bibliography-and-the.pdf
    • http://www.gorillawalker.com/the-art-of-the-game-a-collection-of-vintage-game.pdf
    • http://www.gorillawalker.com/design-for-sport-design-for-social-responsibility.pdf
    • http://www.gorillawalker.com/vampire-addictions-trilogy-book-2-the-holy-man-and-the.pdf
    • http://www.gorillawalker.com/the-night-listener-a-novel.pdf
    • http://www.gorillawa
    • 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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