Malicious PDF — malware analysis report

Static analysis result for SHA-256 9afdf346c33074d2…

MALICIOUS

PDF

34.5 KB Created: 2019-09-02 21:06:24 +03:00 Authoring application: QuarkXPressª 4.11: AdobePS 8.7.3 (301) (via Acrobat Distiller 5.0.5 for Macintosh)
MD5: 6342b3d8c8186066f80176e82ff4d7a4 SHA-1: b382263b7608884959571b49c2319ac5071779d6 SHA-256: 9afdf346c33074d2c894c491623833d04d7d396ec10e472cd2f5f3de363d65b1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a machine learning classifier as malicious and contains a large number of embedded links to external PDF files. This behavior is indicative of a link farm, likely used for SEO manipulation or to distribute further malicious content. The document body is heavily obfuscated and does not provide clear textual clues, but the heuristic firings strongly suggest a malicious intent related to link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8263

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-nursing-assistant-acute-sub-acute-and-long-term-care.pdf
    • http://www.gorillawalker.com/nursing-research-online-for-understanding-nursing-research-user-s-guide.pdf
    • http://www.gorillawalker.com/ruminant-physiology-digestion-metabolism-growth-and-reproduction.pdf
    • http://www.gorillawalker.com/training-staff-in-behavioural-methods-trainee-workbook-the-edy-in.pdf
    • http://www.gorillawalker.com/oriental-rugs-the-secrets-revealed-schiffer-books.pdf
    • http://www.gorillawalker.com/technologie-statt-vertrag-sachmangelbegriff-negative-beschaffenheitsvereinbarungen-und-agb-beim-kauf.pdf
    • http://www.gorillawalker.com/el-rascacielos-unbuilding-spanish-edition.pdf
    • http://www.gorillawalker.com/a-falta-de-gravidade-portuguese-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/microwave-and-millimeter-wave-diode-frequency-multipliers-artech-house-microwave.pdf
    • http://www.gorillawalker.com/advanced-australia-the-politics-of-ageing.pdf
    • http://www.gorillawalker.com/dreams-of-lilacs.pdf
    • http://www.gorillawalker.com/babies-children-s-rooms-for-your-home.pdf
    • http://www.gorillawalker.com/wolves-biology-behavior-and-conservation-animal-science-issues-and-professions.pdf
    • http://www.gorillawalker.com/menendez-pedro-menendez-de-aviles-captain-general-of-the-ocean.pdf
    • http://www.gorillawalker.com/aaron-v-cooper-u-s-supreme-court-transcript-of-record.pdf
    • http://www.gorillawalker.com/transfer-pricing-and-performance-evaluation-in-multinational-corporations-a-survey.pdf
    • http://www.gorillawalker.com/explosive-pulsed-power.pdf
    • http://www.gorillawalker.com/hal-leonard-winds-of-praise-trumpet-book-and-cd.pdf
    • http://www.gorillawalker.com/erasing-hell-what-god-said-about-eternity-and-the-things.pdf
    • http://www.gorillawalker.com/holt-mcdougal-mathematics-homework-and-practice-workbook-course-3.pdf
    • http://www.gorillawalker.com/still-crazy-i-ii-iii.pdf
    • http://www.gorillawalker.com/in-the-land-of-light-israel-a-portrait-of-its.pdf
    • http://www.gorillawalker.com/monster-adventures-in-american-machismo.pdf
    • http://www.gorillawalker.com/minecraft-zombie-farts-an-unofficial-minecraft-book.pdf
    • http://www.gorillawalker.com/fascism-and-communism-european-horizons-paperback.pdf
    • http://www.gorillawalker.com/travel-to-china-discover-the-top-6-things-to-do.pdf
    • http://www.gorillawalker.com/mcdougal-littell-integrated-math-study-guide-book-3.pdf
    • http://www.gorillawalker.com/gender-swap-5-pack-gender-swap-bareback-transformation-box-set.pdf
    • http://www.gorillawalker.com/the-lost-princess-a-double-tale.pdf
    • http://www.gorillawalker.com/south-africa-photographs-celebrating-the-jewel-of-the-african-continent.pdf
    • http://www.gorillawalker.com/spinocerebellar-ataxia.pdf
    • http://www.gorillawalker.com/biographical-sketches-from-the-paraguayan-war-1864-1870.pdf
    • http://www.gorillawalker.com/when-panic-attacks-the-new-drug-free-anxiety-therapy-that.pdf
    • http://www.gorillawalker.com/a-bonfire-in-my-mouth-life-passion-and-the-rainbow.pdf
    • http://www.gorillawalker.com/the-royal-horticultural-society-pests-and-diseases-rhs.pdf
    • http://www.gorillawalker.com/citizen-and-subject-decentralized-despotism-and-the-legacy-of-late.pdf
    • http://www.gorillawalker.com/woman-of-the-green-glade-the-story-of-an-ojibway.pdf
    • http://www.gorillawalker.com/committed-to-care-a-century-of-medical-education-in-south.pdf
    • http://www.gorillawalker.com/harriet-lerner-on-mothers-and-daughters.pdf
    • http://www.gorillawalker.com/rediscovering-jacob-riis-exposure-journalism-and-photography-in-turn-of.pdf
    • http://www.gorillawalker.com/technologie-statt-vertrag-sachmangelbegriff-negative-beschaffenh
    • 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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