Malicious PDF — malware analysis report

Static analysis result for SHA-256 8609505f7781b42a…

MALICIOUS

PDF

44.0 KB Created: 2019-04-09 01:14:51 +03:00 Authoring application: - (via Adobe Acrobat 10.0 Paper Capture Plug-in)
MD5: eb78af015c657f2cbef171de2c0b7653 SHA-1: 03d48a08937c9498279d1624222e29214babdcd1 SHA-256: 8609505f7781b42adc1ce437e54bcdbfc18a3aae91dc19aeccc07695eab2e2e2
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF documents, 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 unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/the-art-of-problem-solving-vol-1-the-basics.pdf
    • http://www.gorillawalker.com/the-light-in-the-piazza-playbill-june-2005-vol-121.pdf
    • http://www.gorillawalker.com/ez-solutions-test-prep-series-verbal-section-basic-workbook-gre.pdf
    • http://www.gorillawalker.com/the-present-moment-a-retreat-on-the-practice-of-mindfulness.pdf
    • http://www.gorillawalker.com/theory-and-practice-of-transmission-line-transformers.pdf
    • http://www.gorillawalker.com/alfred-lewis-valentine-famous-cricketers.pdf
    • http://www.gorillawalker.com/the-homoerotics-of-early-modern-drama-cambridge-studies-in-renaissance.pdf
    • http://www.gorillawalker.com/unofficial-drawing-guide-for-miners-how-to-draw-your-favorite.pdf
    • http://www.gorillawalker.com/economic-and-social-progress-in-latin-america-1991-report-special.pdf
    • http://www.gorillawalker.com/una-vida-con.pdf
    • http://www.gorillawalker.com/control-freaks-femdom-stories-of-erotic-mind-control.pdf
    • http://www.gorillawalker.com/triumph-and-tragedy-in-the-crowsnest-pass-paperback.pdf
    • http://www.gorillawalker.com/san-francisco-ship-passenger-lists-ship-rail-and-wagon-train.pdf
    • http://www.gorillawalker.com/men-with-balls-the-professional-athlete-s-handbook.pdf
    • http://www.gorillawalker.com/the-six-million-fact-or-fiction.pdf
    • http://www.gorillawalker.com/film-theory-creating-a-cinematic-grammar-short-cuts.pdf
    • http://www.gorillawalker.com/coleman-s-david-book-of-football-1976.pdf
    • http://www.gorillawalker.com/on-compromise-and-rotten-compromises.pdf
    • http://www.gorillawalker.com/336-billiard-rules-amendment-9787500916345-fu-yongkang-people-s-sports.pdf
    • http://www.gorillawalker.com/the-catcher-in-the-rye-literary-companion-greenhaven-paperback.pdf
    • http://www.gorillawalker.com/basic-electricity-for-industry-circuits-and-machines-canadian-edition.pdf
    • http://www.gorillawalker.com/gmat-2008-comprehensive-program.pdf
    • http://www.gorillawalker.com/2-images-op-10-oboe-2-part-qty-3-a1251.pdf
    • http://www.gorillawalker.com/multiple-sclerosis-a-critical-conspectus.pdf
    • http://www.gorillawalker.com/rose-in-bloom.pdf
    • http://www.gorillawalker.com/massey-ferguson-shop-manual-models-340-350-355-360-399.pdf
    • http://www.gorillawalker.com/common-core-springboard-mathematics-consumable-student-edition.pdf
    • http://www.gorillawalker.com/mr-puffball-stunt-cat-to-the-stars.pdf
    • http://www.gorillawalker.com/rachel-carson-environmental-pioneer-rosen-common-core-readers.pdf
    • http://www.gorillawalker.com/the-clinical-handbook-for-surgical-critical-care-clinical-handbook-series.pdf
    • http://www.gorillawalker.com/health-care-policy-reform-in-america-innovations-from-the-states.pdf
    • http://www.gorillawalker.com/it-s-been-emotional.pdf
    • http://www.gorillawalker.com/contemporary-direct-interactive-marketing-by-spiller-ph-d-ph-d.pdf
    • http://www.gorillawalker.com/haruka-beyond-the-stream-of-time-vol-17.pdf
    • http://www.gorillawalker.com/alpha-omega-alpha-honor-medical-society-centennial-membership-directory.pdf
    • http://www.gorillawalker.com/one-hundred-and-seventy-chinese-poems-unesco-collection-of-representative.pdf
    • http://www.gorillawalker.com/goren-s-bridge-complete.pdf
    • http://www.gorillawalker.com/this-is-not-available-020670.pdf
    • http://www.gorillawalker.com/towel-wrap-techniques-for-handling-cats-with-skill-and-ease.pdf
    • http://www.gorillawalker.com/strong-imagination-madness-creativity-and-human-nature.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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