Malicious PDF — malware analysis report

Static analysis result for SHA-256 901e8a4698b8d7ce…

MALICIOUS

PDF

43.3 KB Created: 2018-11-23 08:06:05 +03:00 Authoring application: Word (via Mac OS X 10.10.5 Quartz PDFContext)
MD5: 6892ba7b7fae98fada1eda472ce2a670 SHA-1: 97ed20e74570526cef9bb983f1cabe7d64c9efcf SHA-256: 901e8a4698b8d7ce94a17e70b4cf66282ae759be339513c4b8406c32b17172d4
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to external PDF documents on the domain gorillawalker.com. This is indicative of a link farm, likely used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was not parsable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8683

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/tallahassee-florida-local-rand-mcnally-folded-map-cities.pdf
    • http://www.gorillawalker.com/between-hopes-and-memories-a-spanish-journey.pdf
    • http://www.gorillawalker.com/johnstown-trolleys-and-incline-pa-images-of-rail.pdf
    • http://www.gorillawalker.com/new-mexican-tinwork-1840-1940.pdf
    • http://www.gorillawalker.com/anglo-jewish-women-writing-the-holocaust-displaced-witnesses.pdf
    • http://www.gorillawalker.com/the-substance-of-things-seen-art-faith-and-the-christian.pdf
    • http://www.gorillawalker.com/by-brian-lopes-tecnicas-maestras-de-mountain-bike-master-techniques.pdf
    • http://www.gorillawalker.com/exciting-holiness-collects-and-readings-for-the-festivals-and-lesser.pdf
    • http://www.gorillawalker.com/embroidered-memories-375-embroidery-designs-2-alphabets-13-basic-stitches.pdf
    • http://www.gorillawalker.com/if-i-were-a-san-diego-charger.pdf
    • http://www.gorillawalker.com/24-flute-trios.pdf
    • http://www.gorillawalker.com/developmental-biology.pdf
    • http://www.gorillawalker.com/global-journalism-theory-and-practice-global-crises-and-the-media.pdf
    • http://www.gorillawalker.com/practical-techniques-of-psychic-self-defense.pdf
    • http://www.gorillawalker.com/passover-we-love-holidays.pdf
    • http://www.gorillawalker.com/a-royal-disaster-the-princess-diaries.pdf
    • http://www.gorillawalker.com/all-time-standards-book-cd.pdf
    • http://www.gorillawalker.com/the-malpractice-epidemic-a-layman-s-guide-to-medical-malpractice.pdf
    • http://www.gorillawalker.com/color-in-oil-the-artist-s-painting-library.pdf
    • http://www.gorillawalker.com/topics-in-contemporary-mathematical-physics.pdf
    • http://www.gorillawalker.com/by-rachel-a-powsner-essential-nuclear-medicine-physics-22nd-second.pdf
    • http://www.gorillawalker.com/mining-subsidence-engineering.pdf
    • http://www.gorillawalker.com/fundamentals-of-metallic-corrosion-atmospheric-and-media-corrosion-of-metals.pdf
    • http://www.gorillawalker.com/handbook-of-stochastic-methods-for-physics-chemistry-and-the-natural.pdf
    • http://www.gorillawalker.com/a-simple-guide-to-digital-photography-photography-for-all-levels.pdf
    • http://www.gorillawalker.com/solos-for-the-sanctuary-gospel-8-piano-solos-for-the.pdf
    • http://www.gorillawalker.com/tales-of-troy-ulysses-the-sacker-of-cities.pdf
    • http://www.gorillawalker.com/harry-potter-y-la-piedra-filosofal-libro-1-spanish-edition.pdf
    • http://www.gorillawalker.com/naja-hc.pdf
    • http://www.gorillawalker.com/containing-the-defect-structure-fracture-mechanics-chinese-edition.pdf
    • http://www.gorillawalker.com/ripper-a-ripper-novel.pdf
    • http://www.gorillawalker.com/baedeker-s-italy-first-part-northern-italy-including-leghorn-florence.pdf
    • http://www.gorillawalker.com/guia-del-metodo-pilates-guide-to-the-pilates-method-spanish.pdf
    • http://www.gorillawalker.com/aufweitung-von-flie-pre-matrizen-mit-berlagerter-thermischer-und-mechanischer.pdf
    • http://www.gorillawalker.com/managerial-accounting-decision-makling-and-performance-management.pdf
    • http://www.gorillawalker.com/yosemite-national-park-adventure-set.pdf
    • http://www.gorillawalker.com/a-new-vision-of-liberal-education-the-good-of-the.pdf
    • http://www.gorillawalker.com/the-bible-as-literature-an-introduction.pdf
    • http://www.gorillawalker.com/precious-life-jataka-tales.pdf
    • http://www.gorillawalker.com/bible-oases.pdf
    • http://www.gorillawalker.com/exciting-holiness-collects-and-readi
    • 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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