Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db4ba95a66c3971…

MALICIOUS

PDF

41.5 KB Created: 2018-12-15 20:07:31 +03:00 Authoring application: Adobe InDesign CS4 (6.0.6) (via Adobe PDF Library 9.0)
MD5: aef082f880265d4b64d11b33caab674f SHA-1: da490dad3971e661747616c4868fff4113d463fc SHA-256: 9db4ba95a66c3971799686c5c4fdc7aba87d0b286aea51fdf15c130645bc59cf
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a critical heuristic for containing a large number of external links, suggesting a link farm or distribution mechanism. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the sheer volume of embedded URLs points towards an attempt to redirect users to potentially malicious content or for SEO manipulation purposes.

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/psychologie-des-augenblicks-die-magie-des-gew.pdf
    • http://www.gorillawalker.com/advances-in-analytical-geochemistry.pdf
    • http://www.gorillawalker.com/passion-line-photographs-of-dancers.pdf
    • http://www.gorillawalker.com/matter-energy-and-heat-facts-at-your-fingertips.pdf
    • http://www.gorillawalker.com/white-tigress.pdf
    • http://www.gorillawalker.com/robert-s-rule-of-order.pdf
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    • http://www.gorillawalker.com/zenith-rising.pdf
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    • http://www.gorillawalker.com/the-bedwetter-stories-of-courage-redemption-and-pee-by-silverman.pdf
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    • http://www.gorillawalker.com/total-communication-structure-and-strategy.pdf
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    • http://www.gorillawalker.com/the-proof-and-the-pudding-what-mathematicians-cooks-and-you.pdf
    • http://www.gorillawalker.com/slow-burn-dominant-firefighters-bbw-bdsm-erotic-power-romance.pdf
    • http://www.gorillawalker.com/when-tutor-meets-student.pdf
    • http://www.gorillawalker.com/life-and-death-responsibilities-in-jewish-biomedical-ethics.pdf
    • http://www.gorillawalker.com/vice-presidents-a-biographical-dictionary.pdf
    • http://www.gorillawalker.com/learning-to-walk-in-the-dark-because-god-often-shows.pdf
    • http://www.gorillawalker.com/confessions-of-a-mad-man-the-crusaders-justice-above-all.pdf
    • http://www.gorillawalker.com/the-funniest-excuse-book-ever.pdf
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    • http://www.gorillawalker.com/feeling-good-the-new-mood-therapy-revised-and-updated-feeling.pdf
    • http://www.gorillawalker.com/chosen-graphic-novel-the-lost-books-series-book-1.pdf
    • http://www.gorillawalker.com/entrance-into-the-novitiate-by-clerics-in-major-orders-1953.pdf
    • http://www.gorillawalker.com/a-visit-to-colombia-in-1822-and-1823-by-laguayra.pdf
    • http://www.gorillawalker.com/angelina-ballerina-puzzle.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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