Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ef15417702d77ad…

MALICIOUS

PDF

42.7 KB Created: 2018-12-14 20:00:42 +03:00 Authoring application: TeXmacs-1.0.7.3 (via GPL Ghostscript 8.70)
MD5: 0eb89cfa4e81c8657ea9885724b661e2 SHA-1: 5abd19febc05789dc4ce9e4e1f4eabeadfbf93e1 SHA-256: 5ef15417702d77adeb1bc048e225486b08c3049542eea47046c63b6e0c3ef144
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a dropper. While no scripts were explicitly extracted, the nature of the PDF and the numerous external links suggest it is designed to redirect users to potentially malicious content or for SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7146494-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7146494-0
  • 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/postcards-from-heartthrob-town-a-gay-man-s-travel-tales.pdf
    • http://www.gorillawalker.com/common-core-math-grade-4-activities-that-captivate-motivate-reinforce.pdf
    • http://www.gorillawalker.com/reggae-heritage-jamaica-s-music-history-culture-politic-paperback-common.pdf
    • http://www.gorillawalker.com/marine-microbiology-ecology-applications-advanced-texts.pdf
    • http://www.gorillawalker.com/the-cocktail-200-fabulous-drinks.pdf
    • http://www.gorillawalker.com/a-lady-in-the-making-prairie-dreams.pdf
    • http://www.gorillawalker.com/spot-on-the-farm-little-spot.pdf
    • http://www.gorillawalker.com/the-chicken-and-the-egg-hit-the-road-volume-2.pdf
    • http://www.gorillawalker.com/spelling-through-phonics-a-practical-guide-for-kindergarten-through-grade.pdf
    • http://www.gorillawalker.com/developing-java-servlets-sams-professional.pdf
    • http://www.gorillawalker.com/reverse-aging-chinese-chinese-edition.pdf
    • http://www.gorillawalker.com/patient-care-skills-5th-edition.pdf
    • http://www.gorillawalker.com/the-israeli-palestinian-peace-movement-combatants-for-peace.pdf
    • http://www.gorillawalker.com/anxiety-and-depression-workbook-for-dummies.pdf
    • http://www.gorillawalker.com/statistics-for-business-and-economics-12th-edition.pdf
    • http://www.gorillawalker.com/the-mineralogy-of-michigan-bulletin-geological-survey-division-6.pdf
    • http://www.gorillawalker.com/review-of-risk-mitigation-instruments-for-infrastructure-financing-and-recent.pdf
    • http://www.gorillawalker.com/historic-wooden-architecture-in-europe-and-russia-evidence-study-and.pdf
    • http://www.gorillawalker.com/akashic-who-s-who-of-psychics-mediums-healers-and-more.pdf
    • http://www.gorillawalker.com/breaking-the-book-print-humanities-in-the-digital-age-wiley.pdf
    • http://www.gorillawalker.com/the-coleman-hawkins-collection-artist-transcriptions-tenor-sax.pdf
    • http://www.gorillawalker.com/county-durham-and-teesside-street-atlas.pdf
    • http://www.gorillawalker.com/unusual-substance-the-story-unusual-substance-the-story.pdf
    • http://www.gorillawalker.com/a-history-of-the-french-language.pdf
    • http://www.gorillawalker.com/funga-alafia-song-of-welcome-jill-gallina-2-part-opt.pdf
    • http://www.gorillawalker.com/united-states-reports-volume-523-cases-adjudged-in-the-supreme.pdf
    • http://www.gorillawalker.com/safe-with-me-a-novel.pdf
    • http://www.gorillawalker.com/oxford-essential-arabic-dictionary.pdf
    • http://www.gorillawalker.com/developing-professional-behaviors.pdf
    • http://www.gorillawalker.com/digital-control-systems-theory-hardware-software.pdf
    • http://www.gorillawalker.com/social-and-economic-change-in-the-tribal-areas-1972-76.pdf
    • http://www.gorillawalker.com/war-in-angola-the-final-south-african-phase.pdf
    • http://www.gorillawalker.com/image-analysis-random-fields-and-markov-chain-monte-carlo-methods.pdf
    • http://www.gorillawalker.com/the-basics-of-vegan-cooking-a-practical-introduction-to-vegan.pdf
    • http://www.gorillawalker.com/joint-operations-planning-joint-publication-5-0-kindle-edition.pdf
    • http://www.gorillawalker.com/five-green-men.pdf
    • http://www.gorillawalker.com/cameron-hydraulic-data-16th-edition.pdf
    • http://www.gorillawalker.com/the-solar-system-the-cosmic-perspective-fourth-edition.pdf
    • http://www.gorillawalker.com/bluefield-wv-images-of-america.pdf
    • http://www.gorillawalker.com/the-devlin-woman-kindle-edition.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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