Malicious PDF — malware analysis report

Static analysis result for SHA-256 880503f07673a8c7…

MALICIOUS

PDF

42.9 KB Created: 2019-04-08 21:35:49 +03:00 Authoring application: Adobe Acrobat 8.13 (via Adobe Acrobat 8.13 Image Conversion Plug-in)
MD5: 5b89b7f19f79d9ee89f01206b22040d2 SHA-1: eafca66b62046958041b371076d6138ea9f43699 SHA-256: 880503f07673a8c7ba2b75355e0c8976f0857c5dee858d9b3ea42a7751176eab
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links pointing to external PDF files on the domain 'www.gorillawalker.com'. This behavior is indicative of a link farm, likely intended for SEO manipulation or to serve as a distribution point for further malicious content. While no scripts were explicitly extracted, the ML classifier and the critical heuristic firing strongly suggest malicious intent. The document body itself appears to be obfuscated or corrupted, but the presence of numerous URLs is the primary indicator of the attack pattern.

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/scholastic-discover-more-reader-level-3-titanic.pdf
    • http://www.gorillawalker.com/the-god-gene-how-faith-is-hardwired-into-our-genes.pdf
    • http://www.gorillawalker.com/mckenzie-montana-skies-v1.pdf
    • http://www.gorillawalker.com/manual-of-the-mercentary-soldier-a-guide-to-mercenary-war.pdf
    • http://www.gorillawalker.com/dark-days-in-chile-an-account-of-the-revolution-of.pdf
    • http://www.gorillawalker.com/pain-erasure-the-bonnie-prudden-way-discover-the-wonders-of.pdf
    • http://www.gorillawalker.com/israel-in-song.pdf
    • http://www.gorillawalker.com/spineless-wonders-the-joys-of-formication.pdf
    • http://www.gorillawalker.com/ruth-etting-america-s-forgotten-sweetheart.pdf
    • http://www.gorillawalker.com/wingless-flight-the-lifting-body-story-nasa-sp-4220.pdf
    • http://www.gorillawalker.com/translation-and-the-problem-of-sway-benjamins-translation-library.pdf
    • http://www.gorillawalker.com/consumer-demographics-and-behaviour-markets-are-people-the-springer-series.pdf
    • http://www.gorillawalker.com/the-person-centred-approach-to-therapeutic-change-sage-therapeutic-change.pdf
    • http://www.gorillawalker.com/american-sportsmen-and-the-origins-of-conservation-3rd-ed.pdf
    • http://www.gorillawalker.com/musical-acoustics-3rd-edition.pdf
    • http://www.gorillawalker.com/wrath-of-the-shaitans-shaitan-wars-book-2-kindle-edition.pdf
    • http://www.gorillawalker.com/changing-work-changing-workers-critical-perspectives-on-language-literacy-and.pdf
    • http://www.gorillawalker.com/thos-w-jackson-catches-a-fish-and-tells-the-story.pdf
    • http://www.gorillawalker.com/hunt-for-zero-point-one-man-s-journey-to-discover.pdf
    • http://www.gorillawalker.com/clinical-policies-and-procedures-for-home-health-care-organizations.pdf
    • http://www.gorillawalker.com/beauvoir-and-sartre-the-riddle-of-influence.pdf
    • http://www.gorillawalker.com/the-fibonacci-dictated-trading-script-kindle-edition.pdf
    • http://www.gorillawalker.com/jesus-christmas-party-the-musical.pdf
    • http://www.gorillawalker.com/jeb-stuart.pdf
    • http://www.gorillawalker.com/mathematical-knowledge-and-the-interplay-of-practices.pdf
    • http://www.gorillawalker.com/in-the-shadow-of-the-banyan-a-novel-unabridged-audible.pdf
    • http://www.gorillawalker.com/book2-english-estonian-for-beginners-a-book-in-2-languages.pdf
    • http://www.gorillawalker.com/sunday-dinner-the-lords-supper-and-the-christian-life.pdf
    • http://www.gorillawalker.com/huntress-dark-knight-daughter-huntress.pdf
    • http://www.gorillawalker.com/fortress-of-the-yuan-ti-dungeons-dragons.pdf
    • http://www.gorillawalker.com/open-letters-to-the-intimate-theater.pdf
    • http://www.gorillawalker.com/practical-synthetic-organic-chemistry-reactions-principles-and-techniques-wiley-2011.pdf
    • http://www.gorillawalker.com/erosion-and-sedimentation-kindle-edition.pdf
    • http://www.gorillawalker.com/the-obesity-epidemic-science-morality-and-ideology.pdf
    • http://www.gorillawalker.com/modern-poetry-of-the-arab-world-penguin-poets.pdf
    • http://www.gorillawalker.com/benedict-cumberbatch-calendar-2016-wall-calendars-celebrity-calendars-monthly-wall.pdf
    • http://www.gorillawalker.com/shakespeare-film-fin-de-siecle.pdf
    • http://www.gorillawalker.com/numpy-cookbook-second-edition.pdf
    • http://www.gorillawalker.com/fetish-goddess-dita.pdf
    • http://www.gorillawalker.com/instant-manager-the-more-than-100-quick-tips-and-techniques.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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