Malicious PDF — malware analysis report

Static analysis result for SHA-256 7336094d928ba5fc…

MALICIOUS

PDF

44.3 KB Created: 2018-12-03 17:09:27 +03:00 Authoring application: calibre 0.9.13 [http://calibre-ebook.com]
MD5: 02fc0744152161ee12210f9735fce38d SHA-1: 200643d903cc7b2c202d0b0221de63765a807bd3 SHA-256: 7336094d928ba5fcc5c595d0da4753f0f8f4366e1ef263de580ab1d8a4a21f64
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, 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.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9016

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/learn-legal-terminology-in-2015-english-spanish-essential-english-spanish.pdf
    • http://www.gorillawalker.com/my-new-teacher-and-me.pdf
    • http://www.gorillawalker.com/emerging-metropolis-new-york-jews-in-the-age-of-immigration.pdf
    • http://www.gorillawalker.com/blue-amber-kindle-edition.pdf
    • http://www.gorillawalker.com/reading-mastery-level-4-skillbook-reading-mastery-rainbow-edition.pdf
    • http://www.gorillawalker.com/personal-nutrition-available-titles-coursemate.pdf
    • http://www.gorillawalker.com/beginning-creek-mvskoke-emponvkv.pdf
    • http://www.gorillawalker.com/the-zero-energy-thermal-mass-greenhouse-one-hour-of-free.pdf
    • http://www.gorillawalker.com/ladies-man-the-life-and-trials-of-marvin-mitchelson.pdf
    • http://www.gorillawalker.com/on-the-run-in-siberia.pdf
    • http://www.gorillawalker.com/medicare-s-birth-in-saskatchewan-50th-anniversary-of-a-people.pdf
    • http://www.gorillawalker.com/chemical-engineering-design.pdf
    • http://www.gorillawalker.com/the-a-to-z-of-british-radio-the-a-to.pdf
    • http://www.gorillawalker.com/sedimentation-engineering-theories-measurements-modeling-and-practice-processes-management-modeling.pdf
    • http://www.gorillawalker.com/gentle-giants-my-first-science-library.pdf
    • http://www.gorillawalker.com/ali-boumendjel-1919-1957-une-affaire-fran-aise-une-histoire.pdf
    • http://www.gorillawalker.com/too-big-to-rescue-the-global-financial-meltdown-how-to.pdf
    • http://www.gorillawalker.com/portuguese-cookery-penguin-handbooks.pdf
    • http://www.gorillawalker.com/literary-criticism-and-theory-from-plato-to-postcolonialism.pdf
    • http://www.gorillawalker.com/noise-and-hearing-loss-a-review-general-article-an-article.pdf
    • http://www.gorillawalker.com/love-on-the-line-thorndike-press-large-print-christian-romance.pdf
    • http://www.gorillawalker.com/el-ladron-del-fuego-ataca-de-nuevo-the-fire-thief.pdf
    • http://www.gorillawalker.com/solidworks-for-designers-release-2004.pdf
    • http://www.gorillawalker.com/sword-art-online-progressive-vol-3-manga-sword-art-online.pdf
    • http://www.gorillawalker.com/insurance-dictionary-what-means-what-when-it-comes-to-life.pdf
    • http://www.gorillawalker.com/guitar-tm-magazine-manuscript-paper-4-chord-frames-and-fretboard.pdf
    • http://www.gorillawalker.com/the-a3-workbook-unlock-your-problem-solving-mind.pdf
    • http://www.gorillawalker.com/pilvi-takala.pdf
    • http://www.gorillawalker.com/101-conversation-starters-for-couples-101-conversations-starters.pdf
    • http://www.gorillawalker.com/youth-and-revolution-in-tunisia-african-arguments.pdf
    • http://www.gorillawalker.com/band-geeked-out-kindle-edition.pdf
    • http://www.gorillawalker.com/weight-watchers-take-out-tonight-150-restaurant-favorites-to-make.pdf
    • http://www.gorillawalker.com/dubai-an-arabian-album-a-collection-of-mid-twentieth-century.pdf
    • http://www.gorillawalker.com/statistical-thermodynamics-a-version-of-statistical-mechanics-for-students-of.pdf
    • http://www.gorillawalker.com/wonder-tales-from-baltic-wizards-pagan-mythology-shamanism-and-magic.pdf
    • http://www.gorillawalker.com/dawson-harvey-henderson-and-baird-s-contracts-9th-university-casebook.pdf
    • http://www.gorillawalker.com/magic-tree-house-30-haunted-castle-on-hallows-eve.pdf
    • http://www.gorillawalker.com/the-bear-ate-your-sandwich.pdf
    • http://www.gorillawalker.com/the-hallux-an-issue-of-foot-and-ankle-clinics-1e.pdf
    • http://www.gorillawalker.com/broadband-european-networks-and-multimedia-services-18-20-may-1998.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://calibre-ebook.com
    • 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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