Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d63d65cabe604fe…

MALICIOUS

PDF

44.5 KB Created: 2019-03-18 08:27:41 +03:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 10.1.2 (Windows))
MD5: 0b465f0814ac328e58e52dfcecb053be SHA-1: 09617748fe5a2dcb70e5a58092296e0d18616490 SHA-256: 4d63d65cabe604feae4f9e0576d48f34e5fff23ae6223d2c1a675ad7454177d5
90 Risk Score

Malware Insights

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

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 also flagged this file as malicious with high confidence. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of links suggests a malicious intent, possibly for SEO manipulation or to distribute further malware. No scripts were extracted from this sample.

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/kiss-guide-to-the-kama-sutra-keep-it-simple-guides.pdf
    • http://www.gorillawalker.com/solutions-manual-to-accompany-fundamentals-of-corporate-finance.pdf
    • http://www.gorillawalker.com/the-liturgy-of-life-the-interrelationship-of-sunday-eucharist-and.pdf
    • http://www.gorillawalker.com/star-trek-gold-key-archives-volume-1.pdf
    • http://www.gorillawalker.com/dan-coates-popular-music-collection-for-the-advanced-player-vol.pdf
    • http://www.gorillawalker.com/one-the-same-connecting-fibromyalgia-chronic-fatigue-syndrome-candidiasis-immune.pdf
    • http://www.gorillawalker.com/manual-of-close-up-photography.pdf
    • http://www.gorillawalker.com/instrumental-solotrax-volume-8-sacred-solos-for-bb-trumpet-clarinet.pdf
    • http://www.gorillawalker.com/a-colour-atlas-of-anatomy-of-small-laboratory-animals-volume.pdf
    • http://www.gorillawalker.com/the-minute-boys-of-bunker-hill-w-glossary.pdf
    • http://www.gorillawalker.com/from-marx-and-mao-to-the-market-the-economics-and.pdf
    • http://www.gorillawalker.com/tu-primer-millon-una-historia-de-perseverancia-y-liderazgo-indispensable.pdf
    • http://www.gorillawalker.com/norah-jones-come-away-with-me-piano-vocal-guitar-artist.pdf
    • http://www.gorillawalker.com/the-submerged-state-how-invisible-government-policies-undermine-american-democracy.pdf
    • http://www.gorillawalker.com/local-flaps-in-facial-reconstruction-text-with-dvd-2e.pdf
    • http://www.gorillawalker.com/thea-stilton-special-edition-the-secret-of-the-snow-a.pdf
    • http://www.gorillawalker.com/antoine-plante-mountain-man-rancher-miner-guide-hostler-and-ferryman.pdf
    • http://www.gorillawalker.com/little-bo-in-italy-the-continued-adventures-of-bonnie-boadicea.pdf
    • http://www.gorillawalker.com/the-bullying-workbook-for-teens-activities-to-help-you-deal.pdf
    • http://www.gorillawalker.com/draining-the-styx-kindle-edition.pdf
    • http://www.gorillawalker.com/routledge-handbook-of-the-economics-of-climate-change-adaptation-routledge.pdf
    • http://www.gorillawalker.com/all-that-glows.pdf
    • http://www.gorillawalker.com/guatemala-guide.pdf
    • http://www.gorillawalker.com/vox-spanish-and-english-student-dictionary.pdf
    • http://www.gorillawalker.com/assessing-learners-with-special-needs-an-applied-approach-enhanced-pearson.pdf
    • http://www.gorillawalker.com/just-for-fun-children-s-songs-for-mandolin-59-children.pdf
    • http://www.gorillawalker.com/art-catalog-of-museum-of-fine-arts-boston-wonderful-magnificent.pdf
    • http://www.gorillawalker.com/tree-disease-concepts-2nd-edition.pdf
    • http://www.gorillawalker.com/mushroom-growing-today.pdf
    • http://www.gorillawalker.com/running-with-monsters-a-memoir.pdf
    • http://www.gorillawalker.com/pests-of-paradise-first-aid-and-medical-treatment-of-injuries.pdf
    • http://www.gorillawalker.com/stuff-white-people-like-a-definitive-guide-to-the-unique.pdf
    • http://www.gorillawalker.com/raymie-dickie-and-the-bean-why-i-love-and-hate.pdf
    • http://www.gorillawalker.com/virginia-immigrants-and-adventurers-a-biographical-dictionary-1607-1635.pdf
    • http://www.gorillawalker.com/immunochemical-protocols-methods-in-molecular-biology.pdf
    • http://www.gorillawalker.com/wild-horses-of-the-great-basin-social-competition-and-population.pdf
    • http://www.gorillawalker.com/lolita-the-story-of-a-cover-girl-vladimir-nabokov-s.pdf
    • http://www.gorillawalker.com/we-love-death-as-you-love-life-britain-s-suburban.pdf
    • http://www.gorillawalker.com/the-craft-of-revision.pdf
    • http://www.gorillawalker.com/historic-furnishings-report-alcatraz-island-main-prison-building.pdf
    • http://www.gorillawalker.com/one-the-same-connecting-fibromyalgia-chronic-fatigue-syndrome-candidiasi
    • 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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