Malicious PDF — malware analysis report

Static analysis result for SHA-256 b18a3070f7eb9ac7…

MALICIOUS

PDF

42.6 KB Created: 2018-12-02 10:54:53 +03:00 Authoring application: Adobe Illustrator CS2 (via Adobe PDF library 7.77)
MD5: b82fb5d53a3dea502fd174d526f30e92 SHA-1: 5242eaac739ac2bd4210f76b22e13903736dfc59 SHA-256: b18a3070f7eb9ac7cf0dd3502d98aff5b13d5af8e912d5adc5d6e316bd14b3b7
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 redirection tactic. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the sheer volume of embedded URLs points towards an attempt to manipulate search engine results or redirect users to potentially harmful content hosted on the `gorillawalker.com` domain.

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/fuenteovejuna-biblioteca-didactica-anaya-spanish-edition.pdf
    • http://www.gorillawalker.com/goethe-and-his-age.pdf
    • http://www.gorillawalker.com/new-mexico-route-66-on-tour-legendary-architecture-from-glenrio.pdf
    • http://www.gorillawalker.com/drunk-driving-defense-2008-cumulative-supplement-with-cdrom.pdf
    • http://www.gorillawalker.com/mrs-sigourney-s-letters-to-mothers-1839.pdf
    • http://www.gorillawalker.com/negro-education-in-alabama-a-study-in-cotton-and-steel.pdf
    • http://www.gorillawalker.com/rodrigo-hwv-5-overture-full-score-a1542.pdf
    • http://www.gorillawalker.com/q-a-law-of-contract-2011-and-2012-questions-answers.pdf
    • http://www.gorillawalker.com/bollywood-und-die-briten-die-darstellung-der-ehemaligen-kolonialmacht-im.pdf
    • http://www.gorillawalker.com/army-doctrine-publication-adp-3-0-fm-3-0-unified.pdf
    • http://www.gorillawalker.com/current-trends-in-audiology-folia-phoniatrica-et-logo-paedica-series.pdf
    • http://www.gorillawalker.com/second-book-of-go.pdf
    • http://www.gorillawalker.com/sheet-music-book-disco-fever-a-medley-of-70s-dance.pdf
    • http://www.gorillawalker.com/holt-biology-north-carolina-test-preparation-workbook-biology.pdf
    • http://www.gorillawalker.com/alix-and-nicky-the-passion-of-the-last-tsar-and.pdf
    • http://www.gorillawalker.com/witness-on-the-run-love-inspired-suspense.pdf
    • http://www.gorillawalker.com/hot-fudge-bunnicula-and-friends.pdf
    • http://www.gorillawalker.com/compendium-of-objective-soil-science.pdf
    • http://www.gorillawalker.com/nationwide-overnight-stabling-directory-equestrian-vacation-guide.pdf
    • http://www.gorillawalker.com/volv-monos-invisibles-escalofr-os-no-6.pdf
    • http://www.gorillawalker.com/indonesia-handbook-3rd-footprint-travel-guides.pdf
    • http://www.gorillawalker.com/chromatographic-determination-of-molecular-interactions-applications-in-biochemistry-chemistry-and.pdf
    • http://www.gorillawalker.com/copper-canyon-mexico.pdf
    • http://www.gorillawalker.com/women-s-institute-homemade-soups.pdf
    • http://www.gorillawalker.com/woody-plants-in-winter-a-manual-of-common-trees-and.pdf
    • http://www.gorillawalker.com/frida-kahlo-getting-to-know-the-world-s-greatest-artists.pdf
    • http://www.gorillawalker.com/river-channel-management-towards-sustainable-catchment-hydrosystems-arnold-publication.pdf
    • http://www.gorillawalker.com/billy-elliot.pdf
    • http://www.gorillawalker.com/expresate-cuaderno-da-vocabulario-y-gramatica-level-3.pdf
    • http://www.gorillawalker.com/when-wishes-come-true.pdf
    • http://www.gorillawalker.com/endings-a-sociology-of-death-and-dying.pdf
    • http://www.gorillawalker.com/catalogue-raisonne-de-toutes-les-estampes-qui-forment-l-oeuvre.pdf
    • http://www.gorillawalker.com/power-distribution-networks-with-on-chip-decoupling-capacitors.pdf
    • http://www.gorillawalker.com/managing-anxiety-in-people-with-autism-a-treatment-guide-for.pdf
    • http://www.gorillawalker.com/god-s-little-princess-bedtime-devotional.pdf
    • http://www.gorillawalker.com/running-lean-iterate-from-plan-a-to-a-plan-that.pdf
    • http://www.gorillawalker.com/paleo-orthodoxy-the-paleo-diet-and-lifestyle-and-orthodox-christian.pdf
    • http://www.gorillawalker.com/disaster-management-continuity-of-operations-planning-coop-handbook.pdf
    • http://www.gorillawalker.com/diabetes-diary-includes-bonus-blood-pressure-chart-diabetes-diary-to.pdf
    • http://www.gorillawalker.com/prehospital-emergency-pharmacology-6th-edition.pdf
    • http://www.gorillawalker.com/q-a-law-of-con
    • 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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