Malicious PDF — malware analysis report

Static analysis result for SHA-256 d57cb2712a274177…

MALICIOUS

PDF

45.5 KB Created: 2018-11-23 21:03:41 +03:00 Authoring application: PScript5.dll Version 5.2 (via Acrobat Distiller 5.0 (Windows))
MD5: f7d76c0f31744e6ef368222abb835483 SHA-1: caaa89f8c3400fedbac9fc63140f8c08723672a3 SHA-256: d57cb2712a274177f33af7a1381889be7c412a0c0f5bd6eec64cd8ab0b1281c4
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to host malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. No scripts were extracted, and the document body was not parsable, limiting the ability to determine the exact payload or delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8974

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7309059-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7309059-0
  • 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/manual-on-the-liturgy-lutheran-book-of-worship.pdf
    • http://www.gorillawalker.com/word-biblical-commentary-vol-44-colossians-philemon.pdf
    • http://www.gorillawalker.com/die-f-den-der-zeit-roman-german-edition.pdf
    • http://www.gorillawalker.com/oxford-collocations-dictionary.pdf
    • http://www.gorillawalker.com/the-recovery-of-beauty-arts-culture-medicine.pdf
    • http://www.gorillawalker.com/on-the-big-rivers-from-three-forks-montana-to-new.pdf
    • http://www.gorillawalker.com/faust-im-kino-die-geschichte-des-faustfilms-von-den-anfangen.pdf
    • http://www.gorillawalker.com/the-magic-of-a-name-the-rolls-royce-story-part.pdf
    • http://www.gorillawalker.com/the-german-ideology.pdf
    • http://www.gorillawalker.com/the-angel-of-blythe-hall-a-historical-novel-by-darci.pdf
    • http://www.gorillawalker.com/art-the-life-a-book-on-the-human-figure-its.pdf
    • http://www.gorillawalker.com/morning-poems.pdf
    • http://www.gorillawalker.com/the-secret-journeys-of-jack-london-book-two-the-sea.pdf
    • http://www.gorillawalker.com/doing-your-undergraduate-social-science-dissertation.pdf
    • http://www.gorillawalker.com/the-nemesis-of-faith.pdf
    • http://www.gorillawalker.com/do-over-in-which-a-forty-eight-year-old-father.pdf
    • http://www.gorillawalker.com/qbq-the-question-behind-the-question-practicing-personal-accountability-at.pdf
    • http://www.gorillawalker.com/using-other-people-s-money-to-get-rich-secrets-techniques.pdf
    • http://www.gorillawalker.com/magnetic-particle-testing-classroom-training-book.pdf
    • http://www.gorillawalker.com/faithful-generations-race-and-new-asian-american-churches.pdf
    • http://www.gorillawalker.com/the-runner-s-world-complete-book-of-running-for-beginners.pdf
    • http://www.gorillawalker.com/the-gluten-free-taste-test-game-an-easy-get-started.pdf
    • http://www.gorillawalker.com/circular-v-1134.pdf
    • http://www.gorillawalker.com/el-hijo-del.pdf
    • http://www.gorillawalker.com/sunflower-guide-sorrento-amalfi-capri-car-tours-and-walks-sunflower.pdf
    • http://www.gorillawalker.com/instructional-design-for-teachers-improving-classroom-practice.pdf
    • http://www.gorillawalker.com/pigs-aplenty-pigs-galore.pdf
    • http://www.gorillawalker.com/the-fellow-travellers-intellectual-friends-of-communism.pdf
    • http://www.gorillawalker.com/laura-mckenzie-s-travel-guides-rome-travel-guides-series.pdf
    • http://www.gorillawalker.com/tears-of-longing-nostalgia-and-the-nation-in-japanese-popular.pdf
    • http://www.gorillawalker.com/vintage-easten-entrance-to-yellowstone-national-park-postcard-triple-tunnels.pdf
    • http://www.gorillawalker.com/essentials-of-a-p-for-emergency-care.pdf
    • http://www.gorillawalker.com/clinical-reflexology-a-guide-for-health-professionals-1e.pdf
    • http://www.gorillawalker.com/an-introduction-to-experimental-design-and-statistics-for-biology.pdf
    • http://www.gorillawalker.com/a-color-atlas-of-post-harvest-diseases-and-disorders-of.pdf
    • http://www.gorillawalker.com/healthy-options-vegetarian-meal-plans-recipes-and-daily-grocery-lists.pdf
    • http://www.gorillawalker.com/group-techniques-for-aging-adults-putting-geriatric-skills-enhancement-into.pdf
    • http://www.gorillawalker.com/clarinet-solos.pdf
    • http://www.gorillawalker.com/calendarium-botanicum-or-a-botanical-calendar-exhibiting-at-one-view.pdf
    • http://www.gorillawalker.com/twentieth-century-fox.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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