Malicious PDF — malware analysis report

Static analysis result for SHA-256 b677a3f4d89fd5d4…

MALICIOUS

PDF

43.4 KB Created: 2018-12-15 08:52:41 +03:00 Authoring application: Adobe InDesign CC 2015 (Windows) (via Adobe PDF Library 15.0)
MD5: 1bfccf32a79f2daa85103daf1294d4dc SHA-1: 48114909983e1d516bef86e222c31218d4909952 SHA-256: b677a3f4d89fd5d4440c52918ffe1ffa627c19b8a421af4a670023d24f213c31
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, all pointing to the same domain. This suggests a link farm or redirection scheme. ClamAV detection as Pdf.Dropper.Agent-7143112-0 further supports its malicious nature. The ML classifier also flagged it with high confidence. No scripts were extracted, and the document body was unreadable, but the link farm is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9016

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-7143112-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7143112-0
  • 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/ann-dwyer-s-easy-waters-of-california-north.pdf
    • http://www.gorillawalker.com/meijiishin-ha-naze-satsumakarahajimattanoka-japanese-edition.pdf
    • http://www.gorillawalker.com/cooking-light-the-essential-dinner-tonight-cookbook-over-350-delicious.pdf
    • http://www.gorillawalker.com/eye-movement-desensitization-reprocessing-emdr-in-child-and-adolescent-psychotherapy.pdf
    • http://www.gorillawalker.com/dive-red-sea-the-ultimate-guide.pdf
    • http://www.gorillawalker.com/gaturro-a-lo-grande-1-spanish-edition.pdf
    • http://www.gorillawalker.com/the-magic-land-a-guide-to-south-american-beat-psychedelic.pdf
    • http://www.gorillawalker.com/something-sure-smells-around-here-limericks-poetry-adventures-kindle-edition.pdf
    • http://www.gorillawalker.com/legends-series-relatos-latinoamericanos-la-herencia-africana-spanish-edition.pdf
    • http://www.gorillawalker.com/lumpini-park-abby-kane-fbi-thriller-chasing-chinatown-trilogy-book.pdf
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    • http://www.gorillawalker.com/secrets-of-closing-sales-6th-edition-prentice-hall-business-classics.pdf
    • http://www.gorillawalker.com/metaphysical-bible-dictionary-an-interpretation-of-the-symbolical-meaning-of.pdf
    • http://www.gorillawalker.com/understanding-loss-a-guide-for-caring-for-those-facing-adversity.pdf
    • http://www.gorillawalker.com/affirmative-action-in-medicine-improving-health-care-for-everyone.pdf
    • http://www.gorillawalker.com/school-refusal-children-who-can-t-or-won-t-go.pdf
    • http://www.gorillawalker.com/tesla-inventor-of-the-electrical-age-hardback-common.pdf
    • http://www.gorillawalker.com/baedeker-s-moscow.pdf
    • http://www.gorillawalker.com/world-war-ii-in-photographs.pdf
    • http://www.gorillawalker.com/cheaper-by-the-dozen-f-and-e-gilbreth-novel-units.pdf
    • http://www.gorillawalker.com/the-shepherd-of-the-hills-wright.pdf
    • http://www.gorillawalker.com/a-lens-on-deaf-identities-perspectives-on-deafness.pdf
    • http://www.gorillawalker.com/introduction-to-islamic-economics-theory-and-application-wiley-finance.pdf
    • http://www.gorillawalker.com/sobreviviendo-al-divorcio-surviving-divorce-marabout-spanish-edition.pdf
    • http://www.gorillawalker.com/images-of-leprosy-disease-religion-and-politics-in-european-art.pdf
    • http://www.gorillawalker.com/la-r-demption-unfold-ye-portals-full-score-a6215.pdf
    • http://www.gorillawalker.com/look-out-for-the-poison-dart-frog-surprisingly-scary.pdf
    • http://www.gorillawalker.com/figure-drawing-for-all-its-worth-1946-edition.pdf
    • http://www.gorillawalker.com/jeannine-score.pdf
    • http://www.gorillawalker.com/i-never-told-anybody-teaching-poetry-writing-in-a-nursing.pdf
    • http://www.gorillawalker.com/cottage-cove-a-chechako-in-alaska.pdf
    • http://www.gorillawalker.com/houghton-mifflin-harcourt-senderos-student-edition-volume-1-grade-1.pdf
    • http://www.gorillawalker.com/blanco-white-el-espa.pdf
    • http://www.gorillawalker.com/simply-by-grace-an-introduction-to-god-s-life-changing.pdf
    • http://www.gorillawalker.com/amores-perros-bfi-modern-classics.pdf
    • http://www.gorillawalker.com/minimalist-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/developing-prosperous-soul-how-to-over-come-a-poverty-mind.pdf
    • http://www.gorillawalker.com/invincible-the-10-lies-you-learn-growing-up-with-domestic.pdf
    • http://www.gorillawalker.com/vatersorgen-in-der-heimath-dramen-german-edition.pdf
    • http://www.gorillawalker.com/into-the-dark-book-2-the-eternity-key-kindle-edition.pdf
    • http://www.gorillawalker.com/the-magic-lan
    • 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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