Malicious PDF — malware analysis report

Static analysis result for SHA-256 2975c7e170e15a13…

MALICIOUS

PDF

38.2 KB Created: 2018-11-23 21:32:56 +03:00 Authoring application: PScript5.dll Version 5.2.2 (via Mac OS X 10.8.4 Quartz PDFContext)
MD5: e577d4f5313a4df202b47034fd0dbe7f SHA-1: 8c1f7e72918dec93348fab52f1048bda6f9682b7 SHA-256: 2975c7e170e15a137baa26ffdd4cb72d3dbfc541b25e4343e758ccbb849b9372
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a large external link farm, suggesting a malicious intent to redirect users to numerous external resources. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the sheer volume of linked PDFs, all hosted on the same domain, indicates a coordinated effort to distribute content, potentially malicious, through a link farm strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8379

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/345-solved-seismic-design-problems.pdf
    • http://www.gorillawalker.com/german-english-my-first-picture-dictionary.pdf
    • http://www.gorillawalker.com/the-giving-story-rejoicing-in-god-s-grace.pdf
    • http://www.gorillawalker.com/armies-of-the-raj-from-the-great-indian-mutiny-to.pdf
    • http://www.gorillawalker.com/cryptanalysis-a-study-of-ciphers-and-their-solution.pdf
    • http://www.gorillawalker.com/vampire-castle-crabtree-contact.pdf
    • http://www.gorillawalker.com/culture-unbound-americanization-everyday-life-in-sweden-kindle-edition.pdf
    • http://www.gorillawalker.com/the-music-of-the-spheres.pdf
    • http://www.gorillawalker.com/doing-conversation-analysis-introducing-qualitative-methods-series.pdf
    • http://www.gorillawalker.com/the-vitamin-cure-for-eye-disease.pdf
    • http://www.gorillawalker.com/today-s-essentials-of-governmental-and-not-for-profit-accounting.pdf
    • http://www.gorillawalker.com/anus.pdf
    • http://www.gorillawalker.com/the-essential-johnny-cash.pdf
    • http://www.gorillawalker.com/minecraft-puzzles-activities-games-riddles-paperback.pdf
    • http://www.gorillawalker.com/amish-romance-those-who-wait-on-the-lord-annie-paul.pdf
    • http://www.gorillawalker.com/tarzans-in-the-media-forest-architecture-words.pdf
    • http://www.gorillawalker.com/understanding-pharmacoepidemiology-lange-clinical-science.pdf
    • http://www.gorillawalker.com/dark-thane-dragonlance-the-age-of-mortals.pdf
    • http://www.gorillawalker.com/the-red-eyed-tree-frog.pdf
    • http://www.gorillawalker.com/for-the-love-of-music-invitations-to-listening.pdf
    • http://www.gorillawalker.com/dante-poet-of-the-secular-world-new-york-review-books.pdf
    • http://www.gorillawalker.com/those-about-to-die.pdf
    • http://www.gorillawalker.com/gardner-s-art-through-the-ages.pdf
    • http://www.gorillawalker.com/break-through-a-breakup-kindle-edition.pdf
    • http://www.gorillawalker.com/the-web-of-buddhist-wisdom-introduction-to-the-psychology-of.pdf
    • http://www.gorillawalker.com/advanced-division-straight-forward-math-series.pdf
    • http://www.gorillawalker.com/loud-sound-energy-energy-everywhere.pdf
    • http://www.gorillawalker.com/mexican-american-folklore-american-folklore-series.pdf
    • http://www.gorillawalker.com/essentials-of-pharmacology-for-health-occupations-new-releases-for-health.pdf
    • http://www.gorillawalker.com/cognition-discovery-labs.pdf
    • http://www.gorillawalker.com/mississippi-memories-classic-american-cooking-from-the-heartland-to-the.pdf
    • http://www.gorillawalker.com/avatar-the-last-airbender-the-search-part-3.pdf
    • http://www.gorillawalker.com/semiconductor-optics-and-transport-phenomena-advanced-texts-in-physics.pdf
    • http://www.gorillawalker.com/life-beyond-measure-cd.pdf
    • http://www.gorillawalker.com/crossing-the-plains-with-bruno.pdf
    • http://www.gorillawalker.com/find-me.pdf
    • http://www.gorillawalker.com/possessing-nature-museums-collecting-and-scientific-culture-in-early-modern.pdf
    • http://www.gorillawalker.com/omerta.pdf
    • http://www.gorillawalker.com/the-baby-bequest-love-inspired-historical-wilderness-brides.pdf
    • http://www.gorillawalker.com/reprint-1965-yearbook-sparrows-point-high-school-baltimore-maryland.pdf
    • http://www.gorillawalker.co
    • 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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