Malicious PDF — malware analysis report

Static analysis result for SHA-256 27a90d9e34cc9f01…

MALICIOUS

PDF

43.0 KB Created: 2018-12-28 08:08:43 +03:00 Authoring application: calibre 0.9.13 [http://calibre-ebook.com]
MD5: fa373d1c6a6b48dc7a0fb7f0102f3ae0 SHA-1: 80245ac065072643b4f97ddccbcbcd6fac504e25 SHA-256: 27a90d9e34cc9f019b33cf12f2ff3ec9677c8c7247a4e72eb79e94249d80afe0
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of its specific intent beyond link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

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/tolkien-calendar-2009.pdf
    • http://www.gorillawalker.com/la-autopista-del-sur-y-otros-cuentos.pdf
    • http://www.gorillawalker.com/the-complete-typographer.pdf
    • http://www.gorillawalker.com/the-joy-of-missing-out-finding-balance-in-a-wired.pdf
    • http://www.gorillawalker.com/tropical-gangsters-one-man-s-experience-with-development-and-decadence.pdf
    • http://www.gorillawalker.com/hammer-and-shadow-dungeons-dragons-d20-3-5-fantasy-roleplaying.pdf
    • http://www.gorillawalker.com/pain-free-revolutionary-method-for-stopping-chronic-pain.pdf
    • http://www.gorillawalker.com/basic-gas-chromatography-techniques-in-analytical-chemistry.pdf
    • http://www.gorillawalker.com/his-every-touch-den-of-sin.pdf
    • http://www.gorillawalker.com/laurel-the-year-i-turned-sixteen-number-3.pdf
    • http://www.gorillawalker.com/ministries-a-relational-approach.pdf
    • http://www.gorillawalker.com/elizabeth-gaskell-a-portrait-in-letters.pdf
    • http://www.gorillawalker.com/interfacial-supramolecular-assemblies.pdf
    • http://www.gorillawalker.com/journal-and-letters-of-the-late-samuel-curwen-judge-of.pdf
    • http://www.gorillawalker.com/atkins-diabetes-revolution-control-your-carbs-to-prevent-and-manage.pdf
    • http://www.gorillawalker.com/essentials-of-oceanography-with-cd-rom-and-infotrac.pdf
    • http://www.gorillawalker.com/like-underground-water-the-poetry-of-mid-twentieth-century-japan.pdf
    • http://www.gorillawalker.com/crank-spanish-edition.pdf
    • http://www.gorillawalker.com/by-john-j-bozzola-electron-microscopy.pdf
    • http://www.gorillawalker.com/symphony-no-5-full-score.pdf
    • http://www.gorillawalker.com/shake-a-leg.pdf
    • http://www.gorillawalker.com/la-pluma-y-la-represion-escritoras-contemporaneas-argentinas.pdf
    • http://www.gorillawalker.com/75-a.pdf
    • http://www.gorillawalker.com/the-creative-call-an-artist-s-response-to-the-way.pdf
    • http://www.gorillawalker.com/analog-electronic-circuits-analysis-and-applications-addison-wesley-series-in.pdf
    • http://www.gorillawalker.com/amphibians-reptiles-of-yellowstone-and-grand-teton-national-parks.pdf
    • http://www.gorillawalker.com/the-only-gold.pdf
    • http://www.gorillawalker.com/sky-zone-the-crittendon-files-book-3-unabridged-audible-audio.pdf
    • http://www.gorillawalker.com/managing-projects-in-developing-countries.pdf
    • http://www.gorillawalker.com/pretty-things.pdf
    • http://www.gorillawalker.com/state-violence-and-genocide-in-latin-america-the-cold-war.pdf
    • http://www.gorillawalker.com/bitburg-eagle-country-superbase-10.pdf
    • http://www.gorillawalker.com/pedro-paez-s-history-of-ethiopia-1622-ashgate-pub-co.pdf
    • http://www.gorillawalker.com/raymond-depardon-manicomio-secluded-madness-201.pdf
    • http://www.gorillawalker.com/digital-design-of-nature-computer-generated-plants-and-organics-x.pdf
    • http://www.gorillawalker.com/anecdotes-in-the-varakari-kirtana-folk-tradition-of-maharastra-beitr.pdf
    • http://www.gorillawalker.com/good-business-exercising-effective-and-ethical-leadership.pdf
    • http://www.gorillawalker.com/the-text-of-the-new-testament-its-transmission-corruption-and.pdf
    • http://www.gorillawalker.com/digital-compositing-in-depth.pdf
    • http://www.gorillawalker.com/handbook-of-reference-methods-for-plant-analysis.pdf
    • http://www.gorillawalker.com/basic-gas-chromato
    • 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://calibre-ebook.com
    • 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#
    +1 more URL(s)

Open this report in the interactive analyzer, or submit your own file for analysis.