Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8746aaad3b4634…

MALICIOUS

PDF

42.3 KB Created: 2018-12-02 10:55:06 +03:00 Authoring application: Pages (via Mac OS X 10.11.6 Quartz PDFContext)
MD5: 6bf88f6e940b2f5787fd4bf03a6cdce7 SHA-1: e1955c0bd54cbebe3196f48103256c73a0ad755c SHA-256: 4c8746aaad3b463479bcd5148dbe7e33a1a8bbe3315d0bd6cc702d770a4f500f
90 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/show-me-dirty-10-erotic-short-stories-sexy-stories-collection.pdf
    • http://www.gorillawalker.com/the-eleven-days-of-christmas-america-s-last-vietnam-battle.pdf
    • http://www.gorillawalker.com/the-original-analects.pdf
    • http://www.gorillawalker.com/la-gloire-d-afrique.pdf
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    • http://www.gorillawalker.com/emerging-issues-in-tort-law.pdf
    • http://www.gorillawalker.com/the-cup-of-dionysius-a-paranormal-orgy-sex-erotica-story.pdf
    • http://www.gorillawalker.com/international-classification-of-functioning-disability-and-health-icf.pdf
    • http://www.gorillawalker.com/your-office-microsoft-office-2013-volume-1-your-office-for.pdf
    • http://www.gorillawalker.com/shorts-kindle-edition.pdf
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    • http://www.gorillawalker.com/hawaiian-sunrise.pdf
    • http://www.gorillawalker.com/john-lecarre-a-new-collection-of-three-complete-novels-a.pdf
    • http://www.gorillawalker.com/hip-hotels-atlas.pdf
    • http://www.gorillawalker.com/entertainment-law-3rd-edition.pdf
    • http://www.gorillawalker.com/kathmandu-city.pdf
    • http://www.gorillawalker.com/a-diderot-pictorial-encyclopedia-of-trades-and-industry-manufacturing-and.pdf
    • http://www.gorillawalker.com/brave-are-the-lonely-a-novel-of-world-war-ii.pdf
    • http://www.gorillawalker.com/brain-injury-survival-kit-365-tips-tools-and-tricks-to.pdf
    • http://www.gorillawalker.com/living-with-tinnitus-and-hyperacusis-overcoming-common-problems.pdf
    • http://www.gorillawalker.com/the-hunter-a-highland-guard-novel.pdf
    • http://www.gorillawalker.com/aat-external-auditing-study-text.pdf
    • http://www.gorillawalker.com/gilbert-law-summaries-legal-ethics.pdf
    • http://www.gorillawalker.com/fourier-series.pdf
    • http://www.gorillawalker.com/celtic-recorder-duets.pdf
    • http://www.gorillawalker.com/the-westminster-assembly-and-its-work.pdf
    • http://www.gorillawalker.com/animals-sticker-encyclopedia.pdf
    • http://www.gorillawalker.com/garage-sale-flea-market-annual-cashing-in-on-today-s.pdf
    • http://www.gorillawalker.com/the-dead-hand-the-untold-story-of-the-cold-war.pdf
    • http://www.gorillawalker.com/handbook-of-secondary-fungal-metabolites-3-volume-set.pdf
    • http://www.gorillawalker.com/bayesian-inference-in-dynamic-econometric-models-advanced-texts-in-econometrics.pdf
    • http://www.gorillawalker.com/amending-the-past-europe-s-holocaust-commissions-and-the-right.pdf
    • http://www.gorillawalker.com/radio-nation-communication-popular-culture-and-nationalism-in-mexico-1920.pdf
    • http://www.gorillawalker.com/health-issues-amphetamines.pdf
    • http://www.gorillawalker.com/dk-workbooks-coding-with-scratch-workbook.pdf
    • http://www.gorillawalker.com/the-cup-of-dionysius-a-paranormal-orgy-sex-er
    • 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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