Malicious PDF — malware analysis report

Static analysis result for SHA-256 187e963923020d60…

MALICIOUS

PDF

47.2 KB Created: 2018-11-30 21:01:29 +03:00 Authoring application: QuarkXPress(R) 8.0
MD5: 283b088ce279fa2270bf5a5df5d77bf6 SHA-1: e8c52a795c136a7e614e11202384a0dc82109105 SHA-256: 187e963923020d604e735888a3781f093f1c04a1888ece35889326cc5f89e02b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external websites, identified by the PDF_SEO_LINK_FARM heuristic. While no scripts were explicitly extracted, the presence of embedded URLs within a PDF document suggests an attempt to redirect the user to potentially malicious content or to manipulate search engine rankings. The ML classifier also flagged the document as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8527

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/all-about-the-girl-culture-power-and-identity.pdf
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    • http://www.gorillawalker.com/field-experience-guide-for-elementary-and-middle-school-mathematics-teaching.pdf
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    • http://www.gorillawalker.com/a-taste-of-venice-at-table-with-brunetti.pdf
    • http://www.gorillawalker.com/jerusalem-a-family-portrait.pdf
    • http://www.gorillawalker.com/spanish-american-war-the.pdf
    • http://www.gorillawalker.com/separated-aboriginal-childhood-separations-and-guardianship-law-institute-of-criminology.pdf
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    • http://www.gorillawalker.com/audit-of-the-financial-stability-oversight-council-s-compliance-with.pdf
    • http://www.gorillawalker.com/spellbinding-sentences-a-writer-s-guide-to-achieving-excellence-and.pdf
    • http://www.gorillawalker.com/hymn-of-entry-liturgy-and-life-in-the-orthodox-church.pdf
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    • http://www.gorillawalker.com/the-three-years-the-life-of-christ-between-baptism-and.pdf
    • http://www.gorillawalker.com/iec-60050-300-ed-1-0-b-2001-international-electrotechnical.pdf
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    • 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/