Malicious PDF — malware analysis report

Static analysis result for SHA-256 77368d9fba867fe6…

MALICIOUS

PDF

44.5 KB Created: 2018-11-14 08:40:57 +03:00 Authoring application: Acrobat PDFMaker 7.0 для Word (via Acrobat Distiller 7.0.5 (Windows))
MD5: 5d8f5df5361f7ccf74444f5a80033bf2 SHA-1: 2b0975a33b1799072ad84ae08a748307150da820 SHA-256: 77368d9fba867fe663617107aab848428afa0a636206e293c3a3e857179217b8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document as malicious. The primary attack pattern appears to be the creation of a link farm, likely for SEO manipulation or to distribute a large volume of content, potentially including malicious payloads disguised as legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8173

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/the-joy-of-camping-the-complete-four-seasons-five-senses.pdf
    • http://www.gorillawalker.com/liverpool-fc-special-annual-2000.pdf
    • http://www.gorillawalker.com/berlitz-guide-to-costa-dorada-and-barcelona.pdf
    • http://www.gorillawalker.com/white-collar-crimes-x-posed.pdf
    • http://www.gorillawalker.com/the-winning-edge-how-to-combine-the-single-wing-with.pdf
    • http://www.gorillawalker.com/the-bridge-of-silver-wings.pdf
    • http://www.gorillawalker.com/first-introduction-to-existential-phenomenology.pdf
    • http://www.gorillawalker.com/vocational-curriculum-for-individuals-with-special-needs-transition-from-school.pdf
    • http://www.gorillawalker.com/lonely-planet-cycling-australia-travel-guide.pdf
    • http://www.gorillawalker.com/my-life-queen-of-the-court.pdf
    • http://www.gorillawalker.com/magic-lantern-guides-canon-eos-rebel-t2-eos-rebel-k2.pdf
    • http://www.gorillawalker.com/modern-steam-engineering-in-theory-and-practice-a-new-complete.pdf
    • http://www.gorillawalker.com/baltic-mission-7-a-nathaniel-drinkwater-novel-mariners-library-fiction.pdf
    • http://www.gorillawalker.com/the-healing-effects-of-energy-medicine-memoirs-of-a-medical.pdf
    • http://www.gorillawalker.com/kiss-of-darkness.pdf
    • http://www.gorillawalker.com/knight-s-cross-of-the-german-war-service-cross-v.pdf
    • http://www.gorillawalker.com/comparing-public-policies-issues-and-choices-in-six-industrialized-countries.pdf
    • http://www.gorillawalker.com/millimeter-wave-microstrip-and-printed-circuit-antennas-artech-house-antenna.pdf
    • http://www.gorillawalker.com/the-balkans-classic-tubed-national-geographic-reference-map.pdf
    • http://www.gorillawalker.com/dyslexia-a-multidisciplinary-approach.pdf
    • http://www.gorillawalker.com/bank-security-documents.pdf
    • http://www.gorillawalker.com/tradition-and-innovation-in-folk-literature.pdf
    • http://www.gorillawalker.com/start-and-run-a-money-making-bar.pdf
    • http://www.gorillawalker.com/chronic-pain-the-overlooked-simplicity-of-using-the-fingers-to.pdf
    • http://www.gorillawalker.com/grounding-leadership-theory-and-research-issues-perspectives-and-methods-hc.pdf
    • http://www.gorillawalker.com/interracial-sex-stories-collection-seducing-asian-guys-vol-1-bwam.pdf
    • http://www.gorillawalker.com/identity-theft-cybersafety.pdf
    • http://www.gorillawalker.com/professional-spiritual-pastoral-care-a-practical-clergy-and-chaplain-s.pdf
    • http://www.gorillawalker.com/dubliners.pdf
    • http://www.gorillawalker.com/the-great-atlas-of-the-stars.pdf
    • http://www.gorillawalker.com/american-eldritch-volume-1.pdf
    • http://www.gorillawalker.com/l-vy-matters-iii-l-vy-type-processes-construction-approximation.pdf
    • http://www.gorillawalker.com/greek-tragedies.pdf
    • http://www.gorillawalker.com/speech-technology-excellence-award-tm-speech-world-tm-software-industry.pdf
    • http://www.gorillawalker.com/natural-first-aid-herbal-treatments-for-ailments-injuries-emergency-preparedness.pdf
    • http://www.gorillawalker.com/a-dream-deferred-lucent-library-of-black-history.pdf
    • http://www.gorillawalker.com/the-pony-express-a-history-just-for-kids.pdf
    • http://www.gorillawalker.com/fair-deals-for-watershed-services-in-bolivia-natural-resource-issues.pdf
    • http://www.gorillawalker.com/fuzzy-graphs-and-fuzzy-hypergraphs-studies-in-fuzziness-and-soft.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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