Malicious PDF — malware analysis report

Static analysis result for SHA-256 612c073d65c704b0…

MALICIOUS

PDF

44.8 KB Created: 2018-12-15 20:46:53 +03:00 Authoring application: Adobe InDesign CS6 (Macintosh) (via Adobe PDF Library 10.0.1)
MD5: 0d5a0a2bae96c61f6ed7e822f1b4f0dc SHA-1: 748966dbe02e23d30ce84add13bffaf42064eedc SHA-256: 612c073d65c704b0882cbe42511314b21bd6694b9dda20cda746bc2b98b4b67e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF dropper by ClamAV and an ML classifier. It contains a large number of embedded URLs pointing to external PDF files hosted on 'gorillawalker.com'. This suggests a link farm or SEO manipulation tactic, potentially to distribute more malware or engage in phishing. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8439

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-7143017-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7143017-0
  • 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/what-is-a-triangle-harper-growing-tree.pdf
    • http://www.gorillawalker.com/10-essential-herbs-for-lifelong-health-storey-country-wisdom-bulletin.pdf
    • http://www.gorillawalker.com/counter-terrorism-human-rights-and-the-rule-of-law-crossing.pdf
    • http://www.gorillawalker.com/suggokukaradanoekochan-kaoru-shasinsyu-vol2-suggoku-karadano-ekochan-japanese-edition.pdf
    • http://www.gorillawalker.com/pakistan-s-foreign-policy-a-reappraisal.pdf
    • http://www.gorillawalker.com/exegesis-at-qumran-4qflorilegium-in-its-jewish-context.pdf
    • http://www.gorillawalker.com/r-d-and-licensing-building-value-through-intellectual-assets.pdf
    • http://www.gorillawalker.com/the-mamas-and-the-papas-piano-vocal-guitar-artist-songbook.pdf
    • http://www.gorillawalker.com/approaches-to-teaching-kafka-s-short-fiction-approaches-to-teaching.pdf
    • http://www.gorillawalker.com/call-center-forecasting-and-scheduling-the-best-of-call-center.pdf
    • http://www.gorillawalker.com/shhh-paperback.pdf
    • http://www.gorillawalker.com/contract-law-10th-edition-mylawchamber-pack.pdf
    • http://www.gorillawalker.com/boy-commandos-by-joe-simon-and-jack-kirby-vol-1.pdf
    • http://www.gorillawalker.com/twenty-intermediate-christmas-solos-for-cello-or-bassoon-piano.pdf
    • http://www.gorillawalker.com/science-in-seconds-200-key-concepts-explained-in-an-instant.pdf
    • http://www.gorillawalker.com/tax-deductions-a-to-z-for-home-office-self-employed.pdf
    • http://www.gorillawalker.com/2004-mini-cooper-mini-cooper-s-owners-manual.pdf
    • http://www.gorillawalker.com/fixin-up-your-van-on-a-budget.pdf
    • http://www.gorillawalker.com/in-her-name-confederation.pdf
    • http://www.gorillawalker.com/the-yoga-birth-method-a-step-by-step-guide-for.pdf
    • http://www.gorillawalker.com/real-time-rendering-second-edition.pdf
    • http://www.gorillawalker.com/communities-magazine-25-march-1977-don-t-start-a-commune.pdf
    • http://www.gorillawalker.com/engineering-mechanics-vol-1-statics-si-version.pdf
    • http://www.gorillawalker.com/noisy-farm-animals.pdf
    • http://www.gorillawalker.com/dirty-jokes-n-adult-memes-uncensored-and-explicit-v10-funny.pdf
    • http://www.gorillawalker.com/sheepdogs-of-the-serengeti-kindle-edition.pdf
    • http://www.gorillawalker.com/without-options-a-jake-adams-international-espionage-thriller-unabridged-audible.pdf
    • http://www.gorillawalker.com/assassination-on-embassy-row-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/undertow-a-novella-and-six-stories.pdf
    • http://www.gorillawalker.com/comparative-economic-systems.pdf
    • http://www.gorillawalker.com/five-fold-ministry-officers.pdf
    • http://www.gorillawalker.com/irish-cooking-with-wit-and-wisdom.pdf
    • http://www.gorillawalker.com/the-new-african-diaspora-in-north-america-trends-community-building.pdf
    • http://www.gorillawalker.com/bundle-video-basics-7th-student-workbook.pdf
    • http://www.gorillawalker.com/photography-and-archaeology-reaktion-books-exposures.pdf
    • http://www.gorillawalker.com/lou-stovall-the-art-of-silkscreen-printmaking-signed.pdf
    • http://www.gorillawalker.com/the-intersectional-approach-transforming-the-academy-through-race-class-and.pdf
    • http://www.gorillawalker.com/from-preachers-to-suffragists-woman-s-rights-and-religious-conviction.pdf
    • http://www.gorillawalker.com/searching-for-caleb.pdf
    • http://www.gorillawalker.com/hope-for-survivors-of-childhood-trauma.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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