Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1be7a61d85bdb67…

MALICIOUS

PDF

43.2 KB Created: 2018-12-15 20:00:55 +03:00 Authoring application: Adobe Acrobat 8.0 (via Adobe Acrobat 8.0 Image Conversion Plug-in)
MD5: af54601b4adb88414253595e10a928de SHA-1: e37e79c8c07d7b5b132c9b35e80399c1485639fe SHA-256: a1be7a61d85bdb677b59a6cd63a18225cbf5e4546acdf4d637bfe207b8e55110
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. It contains a large number of embedded links to external PDF files hosted on 'www.gorillawalker.com'. This technique is often used for SEO manipulation or to redirect users to malicious sites. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact payload.

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/christmas-music-from-many-lands-for-three-recorders-recorder-consort.pdf
    • http://www.gorillawalker.com/no-place-like-home-school.pdf
    • http://www.gorillawalker.com/the-jesus-legend-a-case-for-the-historical-reliability-of.pdf
    • http://www.gorillawalker.com/moses-parts-the-sea-little-bible-books.pdf
    • http://www.gorillawalker.com/animals-with-awesome-armor-shells-scales-and-exoskeletons-amazing-animal.pdf
    • http://www.gorillawalker.com/from-the-mouth-of-the-monster-eel-stories-from-micronesia.pdf
    • http://www.gorillawalker.com/cooking-for-mr-latte-a-food-lover-s-courtship-with.pdf
    • http://www.gorillawalker.com/discover-cairngorms-national-park-visitor-map-and-guide-footprint-maps.pdf
    • http://www.gorillawalker.com/the-venturesome-economy-how-innovation-sustains-prosperity-in-a-more.pdf
    • http://www.gorillawalker.com/the-vanguard-messiah-lettrism-between-jewish-mysticism-and-the-avant.pdf
    • http://www.gorillawalker.com/wordpress-seo-success-search-engine-optimization-for-your-wordpress-website.pdf
    • http://www.gorillawalker.com/fashion-marketing-contemporary-issues.pdf
    • http://www.gorillawalker.com/learn-to-draw-pokemon-pencil-drawings-step-by-step-book.pdf
    • http://www.gorillawalker.com/2008-national-practitioners-medical-licensing-examination-public-health-md-practical.pdf
    • http://www.gorillawalker.com/insiders-guide-to-relocation-2nd-insiders-guide-series.pdf
    • http://www.gorillawalker.com/working-with-dynamic-crop-models-second-edition-methods-tools-and.pdf
    • http://www.gorillawalker.com/upper-structure-quartals-piano-voicings-vol-1-volume-1.pdf
    • http://www.gorillawalker.com/lens-on-life-documenting-your-world-through-photography.pdf
    • http://www.gorillawalker.com/living-free-in-enemy-territory-christ-s-triumph-over-satan.pdf
    • http://www.gorillawalker.com/the-space-whiskey-death-chronicles.pdf
    • http://www.gorillawalker.com/angewandte-atomphysik-eine-einf-hrung-in-die-theoretischen-grundlagen-german.pdf
    • http://www.gorillawalker.com/the-bible-cure-for-back-pain-by-colbert-donald-siloam.pdf
    • http://www.gorillawalker.com/equine-emergencies-treatment-and-procedures-3e.pdf
    • http://www.gorillawalker.com/pain-relief-how-to-work-in-harmony-with-your-body.pdf
    • http://www.gorillawalker.com/angel-stations.pdf
    • http://www.gorillawalker.com/that-s-the-way-i-think-dyslexia-dyspraxia-and-adhd.pdf
    • http://www.gorillawalker.com/i-sverige-minnen-och-bilder-fran.pdf
    • http://www.gorillawalker.com/don-t-get-sick-a-panic-free-pocket-guide-to.pdf
    • http://www.gorillawalker.com/passion-s-kiss-the-passion-series-book-2.pdf
    • http://www.gorillawalker.com/start-a-business-teaching-kids.pdf
    • http://www.gorillawalker.com/successful-business-writing.pdf
    • http://www.gorillawalker.com/crying-wolf-hate-crime-hoaxes-in-america.pdf
    • http://www.gorillawalker.com/vento-di-scirocco-italian-edition.pdf
    • http://www.gorillawalker.com/how-to-taste-wine-a-guide-to-wine-tasting-serving.pdf
    • http://www.gorillawalker.com/the-border-challenge-an-insider-s-guide-to-stopping-drugs.pdf
    • http://www.gorillawalker.com/comprehensive-chemical-kinetics-new-techniques-for-the-study-of-electrodes.pdf
    • http://www.gorillawalker.com/civilization-in-the-west-volume-b-from-1350-to-1850.pdf
    • http://www.gorillawalker.com/baby-food-recipes-easy-wholesome-recipes-for-busy-parents-6.pdf
    • http://www.gorillawalker.com/unrevidierte-lutherbibel-1545-german-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/the-victory-lab-the-secret-science-of-winning-campaigns-by.pdf
    • http://www.gorillawalker.com/discover-cairngorms-national-park-visitor-map-a
    • 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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