Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c303026144b1fa…

MALICIOUS

PDF

45.7 KB Created: 2018-11-30 20:34:11 +03:00 Authoring application: Acrobat PDFMaker 11 for Word (via Acrobat Distiller 11.0 (Windows))
MD5: bdff43bdaf802e3b828c5740b13e4219 SHA-1: e39eb98b496860dde7d70e505b1631ba2b3c2e7f SHA-256: 58c303026144b1fa7ed390e16ecd7972c962a60d056abf2334e4626592502537
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 SEO abuse. The ML classifier also indicated maliciousness. While no scripts were extracted, the sheer volume of embedded URLs points towards a malicious intent, likely to distribute or host further malicious content or to manipulate search engine rankings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8974

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/dievas-yra-meska-happy-halloween-lithuanian-edition.pdf
    • http://www.gorillawalker.com/the-formalisms-of-quantum-mechanics-an-introduction-lecture-notes-in.pdf
    • http://www.gorillawalker.com/the-sublime-life-of-monasticism.pdf
    • http://www.gorillawalker.com/the-other-emptiness.pdf
    • http://www.gorillawalker.com/measuring-weight-and-time-math-for-fun.pdf
    • http://www.gorillawalker.com/world-radio-tv-handbook-the-directory-of-global-broadcasting.pdf
    • http://www.gorillawalker.com/8-steps-to-a-pain-free-back-natural-posture-solutions.pdf
    • http://www.gorillawalker.com/advances-in-communication-research-to-reduce-childhood-obesity.pdf
    • http://www.gorillawalker.com/the-michigan-meap-coach-preparation-for-the-grade-7-reading.pdf
    • http://www.gorillawalker.com/analysis-of-sedimentary-successions.pdf
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    • http://www.gorillawalker.com/understanding-growth-hormone-new-discoveries-to-help-very-short-children.pdf
    • http://www.gorillawalker.com/drama-of-70-for-the-sanctity-of-life-story-long.pdf
    • http://www.gorillawalker.com/responsibility-and-the-moral-sentiments.pdf
    • http://www.gorillawalker.com/spanish-translated-milady-standard-cosmetology-2016.pdf
    • http://www.gorillawalker.com/five-minute-phobia-cure-dr-callahan-s-treatment-for-fears.pdf
    • http://www.gorillawalker.com/college-success-coursemate-with-ebook-printed-access-card-for-wong.pdf
    • http://www.gorillawalker.com/changing-homosexuality-in-the-male-treatment-for-men-troubled-by.pdf
    • http://www.gorillawalker.com/measuring-up-to-the-new-york-state-learning-standards-mathematics.pdf
    • http://www.gorillawalker.com/by-night-in-chile.pdf
    • http://www.gorillawalker.com/grammar-in-context-1.pdf
    • http://www.gorillawalker.com/the-mad-scientist-s-guide-to-world-domination-original-short.pdf
    • http://www.gorillawalker.com/condemnation-r-a-salvatore-presents-the-war-of-the-spider.pdf
    • http://www.gorillawalker.com/la-auto-uroterapia-metodo-natural-para-el-tratamiento-de-alergia.pdf
    • http://www.gorillawalker.com/tokyo-a-cultural-and-literary-history.pdf
    • http://www.gorillawalker.com/the-honolulu-pact.pdf
    • http://www.gorillawalker.com/rock-of-ages-the-rolling-stone-history-of-rock-and.pdf
    • http://www.gorillawalker.com/literature-and-evil.pdf
    • http://www.gorillawalker.com/clinical-pharmacology-update-the-veterinary-clinics-of-north-america-food.pdf
    • http://www.gorillawalker.com/down-body-fat-friend-living-series-of-housewife-in-rhythmic.pdf
    • http://www.gorillawalker.com/on-writing-a-memoir-of-the-craft-unabridged-audible-audio.pdf
    • http://www.gorillawalker.com/alzheimer-s-how-to-protect-the-brain.pdf
    • http://www.gorillawalker.com/spring-walk.pdf
    • http://www.gorillawalker.com/2009-42-cfr-430-end-health-human-services-2009-title.pdf
    • http://www.gorillawalker.com/couture-in-the-21st-century-in-the-words-of-30.pdf
    • http://www.gorillawalker.com/the-thresl-chronicles-volume-one.pdf
    • http://www.gorillawalker.com/schonberg-and-kandinsky-an-historic-encounter-contemporary-music-studies-kindle.pdf
    • http://www.gorillawalker.com/department-of-the-army-pamphlet-da-pam-738-751-logistics.pdf
    • http://www.gorillawalker.com/a-little-love-in-big-manhattan-two-yiddish-poets.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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