Malicious PDF — malware analysis report

Static analysis result for SHA-256 77622e5e21b16c12…

MALICIOUS

PDF

44.2 KB Created: 2019-03-17 12:11:46 +03:00 Authoring application: LaTeX with hyperref and pdfscreen (via Mac OS X 10.5.7 Quartz PDFContext)
MD5: 1eace278309f711e5a5d7102ea2b6f08 SHA-1: cd34b55e73c215aecddce1ffbd5e6e929f717e15 SHA-256: 77622e5e21b16c1207d87c55881d473bb7a62af147f6bfdd987b3d24508a045b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious intent to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/geomorphology-of-oil-and-gas-fields-in-sandstone-bodies-volume.pdf
    • http://www.gorillawalker.com/a-very-special-holiday-gift-harlequin-romance.pdf
    • http://www.gorillawalker.com/symmetries-in-physics-proceedings-of-the-international-symposium-held-in.pdf
    • http://www.gorillawalker.com/atlas-of-global-christianity.pdf
    • http://www.gorillawalker.com/the-enforcer-nhl-scorpions.pdf
    • http://www.gorillawalker.com/policing-rio-de-janeiro-repression-and-resistance-in-a-nineteenth.pdf
    • http://www.gorillawalker.com/athens-acropolis.pdf
    • http://www.gorillawalker.com/the-international-encyclopedia-of-gambling-2-volumes.pdf
    • http://www.gorillawalker.com/work-society-and-culture.pdf
    • http://www.gorillawalker.com/the-baby-of-their-dreams.pdf
    • http://www.gorillawalker.com/julia-s-story-sisters-of-the-quantock-hills-quantock-s.pdf
    • http://www.gorillawalker.com/history-of-cartography-revised-and-enlarged-by-r-a-skelton.pdf
    • http://www.gorillawalker.com/this-is-dali-artists-monographs.pdf
    • http://www.gorillawalker.com/95-dexterity-exercises-and-dances-for-recorders-in-c-soprano.pdf
    • http://www.gorillawalker.com/linear-algebra-with-applications-2-download-5th-edition-print-replica.pdf
    • http://www.gorillawalker.com/why-do-rainbows-have-so-many-colors.pdf
    • http://www.gorillawalker.com/taste-of-hyderabad-veg.pdf
    • http://www.gorillawalker.com/a-fashionable-indulgence-a-society-of-gentlemen-novel.pdf
    • http://www.gorillawalker.com/restless-cities.pdf
    • http://www.gorillawalker.com/christmas-carols-keyboard-percussion-easy-instrumental-play-along-book-with.pdf
    • http://www.gorillawalker.com/exclusively-kamado-50-innovative-recipes-for-your-ceramic-smoker-and.pdf
    • http://www.gorillawalker.com/crossing-borders-in-community-interpreting-definitions-and-dilemmas-benjamins-translation.pdf
    • http://www.gorillawalker.com/notes-on-meterology-the-kemp-and-young-series.pdf
    • http://www.gorillawalker.com/richard-wright-the-life-and-times.pdf
    • http://www.gorillawalker.com/naruto-43.pdf
    • http://www.gorillawalker.com/thomas-aquinas-disputed-questions-on-the-virtues-cambridge-texts-in.pdf
    • http://www.gorillawalker.com/geography-classbook-ks3.pdf
    • http://www.gorillawalker.com/minsk-belarus-guide-to-the-international-city.pdf
    • http://www.gorillawalker.com/regarding-the-pain-of-others.pdf
    • http://www.gorillawalker.com/survey-of-the-implementation-of-the-ec-corporate-tax-directives.pdf
    • http://www.gorillawalker.com/a-scanning-electron-microscopy-comparison-of-the-effects-of-the.pdf
    • http://www.gorillawalker.com/preserving-yellowstone-s-natural-conditions-science-and-the-perception-of.pdf
    • http://www.gorillawalker.com/prevention-and-detection-of-colorectal-cancer.pdf
    • http://www.gorillawalker.com/maximum-achievement-strategies-and-skills-that-will-unlock-your-hidden.pdf
    • http://www.gorillawalker.com/fundamentals-of-fingerprint-analysis.pdf
    • http://www.gorillawalker.com/german-architectural-theory-and-the-search-for-modern-identity.pdf
    • http://www.gorillawalker.com/applied-differential-equations.pdf
    • http://www.gorillawalker.com/encyclopedia-of-survey-research-methods.pdf
    • http://www.gorillawalker.com/modern-war-machine-military-aviation-since-1945-history-of-aircraft.pdf
    • http://www.gorillawalker.com/pediatric-practice-respiratory-and-allergic-disease.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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