Malicious PDF — malware analysis report

Static analysis result for SHA-256 afef417bee46a6c4…

MALICIOUS

PDF

44.8 KB Created: 2018-12-14 20:34:40 +03:00 Authoring application: - (via ABBYY FineReader 9.0 Sprint)
MD5: b02afcdac9c13acaeff83181ca57a254 SHA-1: 342d09793e35e5746ccaad05aa50d02a6527d08a SHA-256: afef417bee46a6c47c99ccf929798a1b3c2be3e8802accebf51131359e48c79d
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 files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8600

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/eater-s-choice-a-food-lover-s-guide-to-lower.pdf
    • http://www.gorillawalker.com/transformers-vs-g-i-joe-volume-2.pdf
    • http://www.gorillawalker.com/a-history-of-western-society-since-1300-advanced-placement.pdf
    • http://www.gorillawalker.com/advances-in-diabetes-novel-insights.pdf
    • http://www.gorillawalker.com/jack-bauer-for-president-terrorism-and-politics-in-24-smart.pdf
    • http://www.gorillawalker.com/never-let-it-end-poems-of-a-lifelong-love.pdf
    • http://www.gorillawalker.com/contracted-staff-and-patient-safety.pdf
    • http://www.gorillawalker.com/how-historians-work-retelling-the-past-from-the-civil-war.pdf
    • http://www.gorillawalker.com/catering-to-nobody-goldy-book-1.pdf
    • http://www.gorillawalker.com/power-systems.pdf
    • http://www.gorillawalker.com/the-parrot-tico-tango-turtleback-school-library-binding-edition.pdf
    • http://www.gorillawalker.com/microsurgery-of-the-lumbar-spine-principles-and-techniques-in-spine.pdf
    • http://www.gorillawalker.com/barn-owls-mini.pdf
    • http://www.gorillawalker.com/impact-of-vedic-thought-on-sanskrit-kavyas-sanskrit-edition.pdf
    • http://www.gorillawalker.com/teamwork-and-teamplay.pdf
    • http://www.gorillawalker.com/salvador-vintage-international-kindle-edition.pdf
    • http://www.gorillawalker.com/ode-for-trumpet.pdf
    • http://www.gorillawalker.com/head-neck-surgery-oral-maxillofacial-surgery-ophthalmology-otorhinolaryngology.pdf
    • http://www.gorillawalker.com/mirror-mirror-off-the-wall-how-i-learned-to-love.pdf
    • http://www.gorillawalker.com/clep-principles-of-marketing-exam-secrets-study-guide-clep-test.pdf
    • http://www.gorillawalker.com/developmental-coaching-working-with-the-self.pdf
    • http://www.gorillawalker.com/barbarian-tales-book-4-road-to-persepolis.pdf
    • http://www.gorillawalker.com/human-development-a-cultural-approach-plus-new-mypsychlab-with-etext.pdf
    • http://www.gorillawalker.com/shade-of-his-hand.pdf
    • http://www.gorillawalker.com/route-66-images-of-americas-main-street.pdf
    • http://www.gorillawalker.com/physicalist-soteriology-in-hilary-of-poitiers-vigiliae-christianae-supplements.pdf
    • http://www.gorillawalker.com/dynamic-yoga-the-ultimate-workout-that-chills-your-mind-as.pdf
    • http://www.gorillawalker.com/salvaged.pdf
    • http://www.gorillawalker.com/obesity-pathology-and-therapy-handbook-of-experimental-pharmacology.pdf
    • http://www.gorillawalker.com/dk-eyewitness-top-10-travel-guide-florence-tuscany.pdf
    • http://www.gorillawalker.com/management-audits-the-assessment-of-quality-management-systems.pdf
    • http://www.gorillawalker.com/best-handwriting-for-ages-4-5.pdf
    • http://www.gorillawalker.com/making-great-cowboy-coffee-a-guide-to-brewing-cowboy-coffee.pdf
    • http://www.gorillawalker.com/graphene-based-composite-materials-advanced-material-series.pdf
    • http://www.gorillawalker.com/theodor-adorno-critical-evaluations-in-cultural-theory.pdf
    • http://www.gorillawalker.com/climbing-out-of-depression-a-practical-guide-to-real-and.pdf
    • http://www.gorillawalker.com/transportation-infrastructure-engineering-a-multimodal-integration.pdf
    • http://www.gorillawalker.com/by-john-newman-scuba-diving-and-snorkeling-for-dummies-1st.pdf
    • http://www.gorillawalker.com/advanced-algebra-student-edition-practice-workbook-2001c.pdf
    • http://www.gorillawalker.com/bridge-endings-the-end-game-made-easy-with-30-common.pdf
    • http://www.gorillawalker.com/jack-bauer-for-president-terroris
    • 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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