Malicious PDF — malware analysis report

Static analysis result for SHA-256 c36eacfcee8a09b8…

MALICIOUS

PDF

42.5 KB Created: 2018-12-15 08:16:33 +03:00 Authoring application: Pdf995 (via GNU Ghostscript 7.05) First seen: 2021-06-28
MD5: 9928d8c23680b02aaabde6dfa88e0917 SHA-1: 550f2d221f0261cf548a89fea489a5290d455df0 SHA-256: c36eacfcee8a09b8a417b6f34c18a4d7445912f5b626aa4fde66c138b82f5d15
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While no scripts were explicitly extracted, the ML classifier flagged the PDF as malicious, suggesting it likely attempts to redirect users to malicious content or for SEO manipulation. The embedded URLs are the primary IOCs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8698

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/tryptophan-metabolism-implications-for-biological-processes-health-and-disease-molecular.pdf In PDF document text
    • http://www.gorillawalker.com/california-fylse-baby-bar-study-bible-e-law-book-ebook.pdfIn PDF document text
    • http://www.gorillawalker.com/fluxes-between-trophic-levels-and-through-the-water-sediment-interface.pdfIn PDF document text
    • http://www.gorillawalker.com/the-lesser-evil-the-diaries-of-victor-klemperer-1945-59.pdfIn PDF document text
    • http://www.gorillawalker.com/teen2teen-four-student-book-and-workbook-with-cd-rom.pdfIn PDF document text
    • http://www.gorillawalker.com/business-plus-level-3-teacher-s-manual.pdfIn PDF document text
    • http://www.gorillawalker.com/tecnicas-de-lectura-rapida-spanish-edition-kindle-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/hot-seat-the-startup-ceo-guidebook.pdfIn PDF document text
    • http://www.gorillawalker.com/the-new-normal-great-opportunities-in-a-time-of-great.pdfIn PDF document text
    • http://www.gorillawalker.com/el-poder-curativo-de-la-s-bila.pdfIn PDF document text
    • http://www.gorillawalker.com/morning-star-book-iii-of-the-red-rising-trilogy.pdfIn PDF document text
    • http://www.gorillawalker.com/slavery-and-the-romantic-imagination.pdfIn PDF document text
    • http://www.gorillawalker.com/christo-fiction-the-ruins-of-athens-and-jerusalem-insurrections-critical.pdfIn PDF document text
    • http://www.gorillawalker.com/the-biological-balance-perfect-pond-detective-bk-1.pdfIn PDF document text
    • http://www.gorillawalker.com/enforcing-planning-control-legislative-provisions-and-procedural-requirements-circular.pdfIn PDF document text
    • http://www.gorillawalker.com/the-scribner-science-reference-series-life-sciences-before-the-twentieth.pdfIn PDF document text
    • http://www.gorillawalker.com/lesezeichen-und-kalender-harry-potter-2006.pdfIn PDF document text
    • http://www.gorillawalker.com/applied-probability-models-with-optimization-applications-dover-books-on-mathematics.pdfIn PDF document text
    • http://www.gorillawalker.com/a-time-to-dance-noah-and-the-waters-and-other.pdfIn PDF document text
    • http://www.gorillawalker.com/coal-class-and-color-blacks-in-southern-west-virginia-1915.pdfIn PDF document text
    • http://www.gorillawalker.com/machines-of-loving-graces-the-quest-for-common-ground-between.pdfIn PDF document text
    • http://www.gorillawalker.com/nelson-international-mathematics-2nd-edition-workbook-1a.pdfIn PDF document text
    • http://www.gorillawalker.com/saudi-arabia-land-people-and-culture.pdfIn PDF document text
    • http://www.gorillawalker.com/hooked-rug-portraits-rug-hooking.pdfIn PDF document text
    • http://www.gorillawalker.com/classic-papers-in-combinatorics.pdfIn PDF document text
    • http://www.gorillawalker.com/minecraft-secrets-tips-and-strategies-for-beginners-to-conquer-the.pdfIn PDF document text
    • http://www.gorillawalker.com/where-does-your-food-go-rookie-read-about-health.pdfIn PDF document text
    • http://www.gorillawalker.com/principles-of-constitutional-government-the-political-sovereignty.pdfIn PDF document text
    • http://www.gorillawalker.com/action-in-the-case-of-non-conformity-of-concrete-structures.pdfIn PDF document text
    • http://www.gorillawalker.com/motion-of-light-in-water-the-sex-and-science-fiction.pdfIn PDF document text
    • http://www.gorillawalker.com/on-writing-a-memoir-of-the-craft-scribner-classics.pdfIn PDF document text
    • http://www.gorillawalker.com/snowbound-wet-with-desire-lesbian-erotica.pdfIn PDF document text
    • http://www.gorillawalker.com/100-things-you-should-know-about-the-wild-west.pdfIn PDF document text
    • http://www.gorillawalker.com/self-identity-and-social-movements-social-movements-protest-and-contention.pdfIn PDF document text
    • http://www.gorillawalker.com/la-tortuga-gigante-cuentos-de-la-selva-spanish-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/in-this-corner-forty-world-champions-tell-their-stories.pdfIn PDF document text
    • http://www.gorillawalker.com/couples-scavenger-hunt-paris.pdfIn PDF document text
    • http://www.gorillawalker.com/clinical-assessment-in-respiratory-care-paperback.pdfIn PDF document text
    • http://www.gorillawalker.com/holt-elements-of-literature-the-holt-reader-second-course.pdfIn PDF document text
    • http://www.gorillawalker.com/figures-of-the-text-reading-and-writing-in-la-fontaine.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

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