Malicious PDF — malware analysis report

Static analysis result for SHA-256 db534ac82cb7c9a6…

MALICIOUS

PDF

45.3 KB Created: 2018-11-14 11:23:13 +03:00 Authoring application: - (via Acrobat Distiller 15.0 (Windows))
MD5: a1ce76eae90d9c4376c9d06e4896d5de SHA-1: 92be42c5320fc1487ea9dffb77b84e01f8f170d6 SHA-256: db534ac82cb7c9a68ad43c06d450f5fa848378d4f714d6b4461fb39a61bcfbd3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF was flagged by a critical heuristic for containing a large number of external links, suggesting a link farm or distribution mechanism. The ML classifier also indicated a high probability of maliciousness. While no scripts were extracted, the sheer volume of embedded URLs points towards an attempt to redirect users to potentially malicious content or to manipulate search engine rankings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7887

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/the-transcendent-function-jung-s-model-of-psychological-growth-through.pdf
    • http://www.gorillawalker.com/c-mo-iniciar-su-propio-negocio-how-to-start-your.pdf
    • http://www.gorillawalker.com/gurps-martial-arts-adventures.pdf
    • http://www.gorillawalker.com/introduction-to-3-d-spatial-visualization.pdf
    • http://www.gorillawalker.com/sounds-of-christmas-solos-with-ensemble-arrangements-for-two-or.pdf
    • http://www.gorillawalker.com/product-management-standardized-management-toolbox-chinese-edition.pdf
    • http://www.gorillawalker.com/onderdonkey.pdf
    • http://www.gorillawalker.com/fashion-interior-design-and-the-contours-of-modern-identity.pdf
    • http://www.gorillawalker.com/mountain-bike-action-magazine-may-2015.pdf
    • http://www.gorillawalker.com/teach-n-soccer-free-flow-manual-handbook-and-guide-for.pdf
    • http://www.gorillawalker.com/the-first-rule-of-ten-a-tenzing-norbu-mystery.pdf
    • http://www.gorillawalker.com/imaging-of-the-foot-and-ankle-clinical-diagnostic-imaging-series.pdf
    • http://www.gorillawalker.com/basic-polish-a-grammar-and-workbook-grammar-workbooks.pdf
    • http://www.gorillawalker.com/stimson-s-introduction-to-airborne-radar.pdf
    • http://www.gorillawalker.com/us-army-technical-manual-tm-5-4120-243-24p-air.pdf
    • http://www.gorillawalker.com/worked-example-for-design-of-a-single-span-integral-bridge.pdf
    • http://www.gorillawalker.com/landscapes-of-the-tatra-mountains-of-poland-and-slovakia-a.pdf
    • http://www.gorillawalker.com/thomas-mann-modern-novelists.pdf
    • http://www.gorillawalker.com/quantum-chemistry-solutions-manual.pdf
    • http://www.gorillawalker.com/entrepreneurship-geography-and-american-economic-growth.pdf
    • http://www.gorillawalker.com/black-flagged-vektor.pdf
    • http://www.gorillawalker.com/vagabond-19-spanish-edition.pdf
    • http://www.gorillawalker.com/portal-hypertension-v-proceedings-of-the-fifth-baveno-international-consensus.pdf
    • http://www.gorillawalker.com/becoming-a-practitioner-researcher-a-gestalt-approach-to-holistic-inquiry.pdf
    • http://www.gorillawalker.com/chick-adventures-wow-events-for-women-s-groups.pdf
    • http://www.gorillawalker.com/illustrated-texas-dictionary-of-the-english-language-vol-4.pdf
    • http://www.gorillawalker.com/blutfluch-die-rachel-morgan-serie-13-roman-rachel-morgan-german.pdf
    • http://www.gorillawalker.com/the-martyrs-of-papua-new-guinea-333-missionary-lives-lost.pdf
    • http://www.gorillawalker.com/high-stakes-children-testing-and-failure-in-american-schools.pdf
    • http://www.gorillawalker.com/business-essentials-business-decision-making-study-text-digital.pdf
    • http://www.gorillawalker.com/finding-peace-amid-the-chaos-my-escape-from-depression-and.pdf
    • http://www.gorillawalker.com/the-beagle-it-s-not-easy-to-be-me-good.pdf
    • http://www.gorillawalker.com/financial-intelligence-revised-edition-a-manager-s-guide-to-knowing.pdf
    • http://www.gorillawalker.com/pathology-of-the-breast.pdf
    • http://www.gorillawalker.com/a-coming-christ-in-advent.pdf
    • http://www.gorillawalker.com/library-cataloging-a-guide-for-a-basic-course.pdf
    • http://www.gorillawalker.com/receive-your-miracle-a-manual-on-how-to-receive-miracles.pdf
    • http://www.gorillawalker.com/2d-cad-training-workbooks-using-autocad-r2013-level-2.pdf
    • http://www.gorillawalker.com/rac-rally-encyclopedia.pdf
    • http://www.gorillawalker.com/storytelling-with-data-a-data-visualization-guide-for-business-professionals.pdf
    • http://www.goril
    • 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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