Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bfc9211323aca70…

MALICIOUS

PDF

37.0 KB Created: 2019-12-14 07:09:53 +03:00 Authoring application: Apache FOP Version 2.1
MD5: 171c8ed7befeaf20aa7c333f73a29d87 SHA-1: 81138d3a256428917622ec87dd3c2010130c3816 SHA-256: 6bfc9211323aca70d58a78dece28b64f7a786c105e6089afc8b665ef3cad52db
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF file contains a heuristic firing for a large external link farm, pointing to numerous PDFs on the 'gorillawalker.com' domain. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine results or to distribute a large number of potentially malicious documents. The document body is heavily obfuscated and truncated, preventing a more detailed analysis of its specific content or intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4611

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/encyclopedia-of-pvc-volume-1-resin-manufacture-and-properties-second.pdf
    • http://www.gorillawalker.com/bad-faith-good-faith-and-authenticity-in-sartre-s-early.pdf
    • http://www.gorillawalker.com/daelicious-recipes-for-vibrant-living.pdf
    • http://www.gorillawalker.com/digger-and-daisy-go-to-the-city-i-am-a.pdf
    • http://www.gorillawalker.com/french-satirical-drawings-from-l-assiette-au-beurre.pdf
    • http://www.gorillawalker.com/terror-the-new-traveller-s-companion.pdf
    • http://www.gorillawalker.com/who-owns-the-world-the-surprising-truth-about-every-piece.pdf
    • http://www.gorillawalker.com/kate-inspirational-women-s-fiction-the-women-of-valley-view.pdf
    • http://www.gorillawalker.com/a-jail-in-city-center-cases-in-decision-making-managing.pdf
    • http://www.gorillawalker.com/a-young-palestinian-s-diary-1941-1945-the-life-of.pdf
    • http://www.gorillawalker.com/st-george-knight-martyr-patron-saint-and-dragonslayer.pdf
    • http://www.gorillawalker.com/graduate-programs-in-the-physical-sciences-mathematics-agricultural-sciences-the.pdf
    • http://www.gorillawalker.com/minecraft-house-ideas-the-beach-house-step-by-step-blueprint.pdf
    • http://www.gorillawalker.com/the-cross-stitcher-s-bible.pdf
    • http://www.gorillawalker.com/the-rising-sun-in-the-pacific-1931-april-1942-history.pdf
    • http://www.gorillawalker.com/pediatric-clinical-gastroenterology-4e.pdf
    • http://www.gorillawalker.com/berlitz-vienna-pocket-guide-berlitz-pocket-guide.pdf
    • http://www.gorillawalker.com/club-soccer-101-the-essential-guide-to-the-stars-stats.pdf
    • http://www.gorillawalker.com/through-the-bible-in-one-year-a-52-lesson-introduction.pdf
    • http://www.gorillawalker.com/mcgraw-hill-s-act.pdf
    • http://www.gorillawalker.com/stikeman-income-tax-act-2006.pdf
    • http://www.gorillawalker.com/hannah-and-her-seven-sons-an-incident-of-the-persecution.pdf
    • http://www.gorillawalker.com/photographic-chemistry-in-black-and-white-and-color-photography-hardcover.pdf
    • http://www.gorillawalker.com/deadly-betrayal-the-kidnapping-and-murder-of-mckay-everett.pdf
    • http://www.gorillawalker.com/philosophy-of-law.pdf
    • http://www.gorillawalker.com/cocina-tailandesa-thai-perfect-cooking-spanish-edition.pdf
    • http://www.gorillawalker.com/rio-de-janeiro-city-center-map-by-dedios-city-map.pdf
    • http://www.gorillawalker.com/rival-crockpot-cooking.pdf
    • http://www.gorillawalker.com/the-reason-for-god-belief-in-an-age-of-skepticism.pdf
    • http://www.gorillawalker.com/antitrust-policy-reform-or-repeal-policy-analysis-cato-institute.pdf
    • http://www.gorillawalker.com/heartlight.pdf
    • http://www.gorillawalker.com/ethics-and-philosophical-critique-in-william-james.pdf
    • http://www.gorillawalker.com/the-flower-fairies-scratch-and-sniff-book.pdf
    • http://www.gorillawalker.com/aesthetics-and-cognition-in-kant-s-critical-philosophy.pdf
    • http://www.gorillawalker.com/hiking-for-the-couch-potato-a-guide-for-the-exercise.pdf
    • http://www.gorillawalker.com/better-basketball-for-girls.pdf
    • http://www.gorillawalker.com/on-horsemanship-xenophon.pdf
    • http://www.gorillawalker.com/the-church-teaches-documents-of-the-church-in-english-translation.pdf
    • http://www.gorillawalker.com/el-minifundio-su-evolucion-en-el-ecuador-biblioteca-de-ciencias.pdf
    • http://www.gorillawalker.com/commitment-in-the-workplace-theory-research-and-application-advanced-topics.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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