Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2401bdc03961252…

MALICIOUS

PDF

44.2 KB Created: 2018-12-02 10:55:29 +03:00 Authoring application: doPDF Ver 7.1 Build 349 (Windows XP Professional Edition (SP 3) - Version: 5.1.2600 (x86))
MD5: 8d2055d97a6aae6e1fc48d63d7209b93 SHA-1: 72065e68d19d15e2e54153003dc6b9981b3452c3 SHA-256: f2401bdc03961252db5328be76d871a50271c2b35e43b1ec9753b89e4889e417
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8224

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/estimation-of-the-time-since-death-in-the-early-postmortem.pdf
    • http://www.gorillawalker.com/sensor-based-robots-algorithms-and-architectures-nato-asi-subseries-f.pdf
    • http://www.gorillawalker.com/no-stranger.pdf
    • http://www.gorillawalker.com/acupuncture-in-practice-beyond-points-and-meridians-2e.pdf
    • http://www.gorillawalker.com/the-cooking-of-india-foods-of-the-world-series.pdf
    • http://www.gorillawalker.com/insulation-coordination-for-power-systems-power-engineering-willis.pdf
    • http://www.gorillawalker.com/gas-lighting-shire-library.pdf
    • http://www.gorillawalker.com/write-source-skillsbook-student-edition-grade-7.pdf
    • http://www.gorillawalker.com/outsourcing-blamed-for-devastating-reit-market-property-management-an-article.pdf
    • http://www.gorillawalker.com/considering-transcendence-elements-of-a-philosophical-theology-indiana-series-in.pdf
    • http://www.gorillawalker.com/challenge-of-democracy-high-school.pdf
    • http://www.gorillawalker.com/great-smoky-mountains-national-park-coloring-book.pdf
    • http://www.gorillawalker.com/the-giant-slayer.pdf
    • http://www.gorillawalker.com/the-teachings-of-the-six-heretics-according-of-the-pravrajyavastu.pdf
    • http://www.gorillawalker.com/flavored-vinegars.pdf
    • http://www.gorillawalker.com/learning-assistance-and-developmental-education-a-guide-for-effective-practice.pdf
    • http://www.gorillawalker.com/save-our-sleep-helping-your-baby-to-sleep-through-the.pdf
    • http://www.gorillawalker.com/ospf-complete-implementation-paperback.pdf
    • http://www.gorillawalker.com/symmetries-and-group-theory-in-particle-physics-an-introduction-to.pdf
    • http://www.gorillawalker.com/just-among-friends-poems-1979-2014-kindle-edition.pdf
    • http://www.gorillawalker.com/how-to-do-a-handstand-from-the-basic-exercises-to.pdf
    • http://www.gorillawalker.com/avian-physiology.pdf
    • http://www.gorillawalker.com/crude-oil-and-natural-gas-mining-in-china-download-pdf.pdf
    • http://www.gorillawalker.com/nursing-know-how-interpreting-ecgs.pdf
    • http://www.gorillawalker.com/lily-s-crossing.pdf
    • http://www.gorillawalker.com/embryonic-and-adult-stem-cells-at-issue-series.pdf
    • http://www.gorillawalker.com/endangered-and-threatened-species-of-illinois-status-and-distribution-vol.pdf
    • http://www.gorillawalker.com/the-geological-evidence-of-the-antiquity-of-man.pdf
    • http://www.gorillawalker.com/mathematische-grundlagen-der-quantenmechanik.pdf
    • http://www.gorillawalker.com/steck-vaughn-ged-half-length-practice-test-form-pc-ged.pdf
    • http://www.gorillawalker.com/the-m60-machine-gun-weapon.pdf
    • http://www.gorillawalker.com/omg-my-first-real-job-tips-for-the-real-work.pdf
    • http://www.gorillawalker.com/farmyard-flyers.pdf
    • http://www.gorillawalker.com/the-next-president-kindle-edition.pdf
    • http://www.gorillawalker.com/the-hellenistic-philosophers-vol-1-translations-of-the-principal-sources.pdf
    • http://www.gorillawalker.com/painting-sea-and-sky-in-watercolour-leisure-arts-8.pdf
    • http://www.gorillawalker.com/lone-wolf-and-cub-volume-16-the-gateway-into-winter.pdf
    • http://www.gorillawalker.com/o-coc-teimoso-portuguese-edition.pdf
    • http://www.gorillawalker.com/world-of-reading-henry-hugglemonster-snow-day-level-pre-1.pdf
    • http://www.gorillawalker.com/sams-teach-yourself-html-xhtml-in-24-hours-6th-edition.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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