Malicious PDF — malware analysis report

Static analysis result for SHA-256 5511558203407c5c…

MALICIOUS

PDF

43.0 KB Created: 2018-12-03 17:09:36 +03:00 Authoring application: Word (via Mac OS X 10.7.5 Quartz PDFContext)
MD5: eabef212b03fd6ec502b08908683724d SHA-1: 09c39386e7d962cce4a61d2fdaf41f8e45a38366 SHA-256: 5511558203407c5c2813efd4f550373a0bf0611b58d23724d4f6825d32a8bbfc
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a large number of external links, indicating a link farm or SEO poisoning attempt. The primary heuristic identified a mass external PDF link farm, suggesting the document's purpose is to redirect users to a multitude of other PDF documents hosted on the same domain. No scripts were extracted from this sample, and the document body contained mostly binary data, making it difficult to ascertain the exact nature of the linked content beyond them being PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8242

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/soviet-dissident-literature-a-critical-guide-reference-publication-in-literature.pdf
    • http://www.gorillawalker.com/ipv6-network-administration.pdf
    • http://www.gorillawalker.com/the-dharma-of-star-wars.pdf
    • http://www.gorillawalker.com/exploring-the-hospitality-industry-3rd-edition.pdf
    • http://www.gorillawalker.com/garage-sale-mania-garage-sale-mania-is-a-humorous-fun.pdf
    • http://www.gorillawalker.com/macbeth-ignatius-critical-editions.pdf
    • http://www.gorillawalker.com/david-lean-a-biography.pdf
    • http://www.gorillawalker.com/uncross-my-heart.pdf
    • http://www.gorillawalker.com/doing-dialectical-behavior-therapy-a-practical-guide-guides-to-individualized.pdf
    • http://www.gorillawalker.com/endless-energy-kindle-edition.pdf
    • http://www.gorillawalker.com/manolos-in-manhattan-marrying-mr-darcy-book-3.pdf
    • http://www.gorillawalker.com/nephilim-breeder.pdf
    • http://www.gorillawalker.com/the-name-hashem-daily-devotional-worship.pdf
    • http://www.gorillawalker.com/what-happens-next-kindle-edition.pdf
    • http://www.gorillawalker.com/all-things-sweet-weight-watchers-magazine.pdf
    • http://www.gorillawalker.com/capoeira-illustrated-kindle-edition.pdf
    • http://www.gorillawalker.com/better-homes-and-gardens-new-cook-book-in-a-five.pdf
    • http://www.gorillawalker.com/clementine-rose-and-the-treasure-box-clementine-rose-6.pdf
    • http://www.gorillawalker.com/the-medieval-world-view-an-introduction.pdf
    • http://www.gorillawalker.com/the-2013-2018-world-outlook-for-badminton-paint-ball-racquetball.pdf
    • http://www.gorillawalker.com/teaching-secondary-mathematics-techniques-and-enrichment-units.pdf
    • http://www.gorillawalker.com/an-account-of-the-abipones-an-equestrian-people-of-paraguay.pdf
    • http://www.gorillawalker.com/out-of-the-shadows-alien.pdf
    • http://www.gorillawalker.com/bring-it.pdf
    • http://www.gorillawalker.com/strays-a-woman-a-dog-and-the-timeless-wisdom-of.pdf
    • http://www.gorillawalker.com/elephant-watch-me-grow.pdf
    • http://www.gorillawalker.com/deuteronomic-history-interpreting-biblical-texts.pdf
    • http://www.gorillawalker.com/nystagmus-a-medical-dictionary-bibliography-and-annotated-research-guide-to.pdf
    • http://www.gorillawalker.com/managing-a-junior-soccer-team.pdf
    • http://www.gorillawalker.com/time-saver-standards-a-desk-manual-of-architectural-practice.pdf
    • http://www.gorillawalker.com/dickinson-the-modern-idiom.pdf
    • http://www.gorillawalker.com/history-of-the-town-of-exeter-new-hampshire.pdf
    • http://www.gorillawalker.com/kiss-bow-or-shake-hands-sales-and-marketing-the-essential.pdf
    • http://www.gorillawalker.com/annika-sorenstam-sports-heroes-and-legends.pdf
    • http://www.gorillawalker.com/logo-design-love-a-guide-to-creating-iconic-brand-identities.pdf
    • http://www.gorillawalker.com/bellissimo-wedding-cakes-12-elegant-and-inspiring-tutorials-for-the.pdf
    • http://www.gorillawalker.com/akzente-for-tenor-saxophone-and-piano-by-dietrich-erdmann.pdf
    • http://www.gorillawalker.com/letter-to-my-daughter-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/the-two-of-me-the-rational-outer-me-and-the.pdf
    • http://www.gorillawalker.com/exit-strategy.pdf
    • http://www.gorillawalker.com/u
    • 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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