Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ef3d36f9b78d758…

MALICIOUS

PDF

42.3 KB Created: 2018-12-02 10:55:56 +03:00 Authoring application: Word (via Mac OS X 10.4.2 Quartz PDFContext)
MD5: 8798a3bc783d1f78c88e6be0eb1d7878 SHA-1: 4d2c81ae52b8caa53c9cdbe5173fbcf7a3e7b38f SHA-256: 4ef3d36f9b78d758b85e528ef198b95f418b4ba982d0a260e74dfef7effd4481
60 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic firing for a 'PDF_SEO_LINK_FARM', indicating a large number of external links. The document body also contains numerous embedded URLs pointing to PDF files on the domain 'www.gorillawalker.com'. This suggests the primary purpose is to manipulate search engine results or to serve as a distribution point for further malicious content, potentially leading users to download other malicious PDFs.

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/bird-of-life-bird-of-death-a-naturalist-s-journey.pdf
    • http://www.gorillawalker.com/a-grammar-of-cinepoiesis-poetic-cameras-of-italian-cinema-cine.pdf
    • http://www.gorillawalker.com/just-the-tip-short-stories-of-love-and-lust.pdf
    • http://www.gorillawalker.com/the-secret-of-the-mansion-trixie-belden-1.pdf
    • http://www.gorillawalker.com/wilhelm-von-humboldt-and-german-liberalism-a-reassessment.pdf
    • http://www.gorillawalker.com/optimale-preisstruktur-bestimmung-f.pdf
    • http://www.gorillawalker.com/the-europe-of-the-cathedrals-1140-1280.pdf
    • http://www.gorillawalker.com/pci-compliance-the-definitive-guide-print-replica-kindle-edition.pdf
    • http://www.gorillawalker.com/the-tv-guide-quiz-book.pdf
    • http://www.gorillawalker.com/crossing-cruising-from-the-golden-era-of-ocean-liners-to.pdf
    • http://www.gorillawalker.com/number-theory-an-approach-through-history-from-hammurapi-to-legendre.pdf
    • http://www.gorillawalker.com/an-illustrated-guide-to-the-common-birds-of-cape-cod.pdf
    • http://www.gorillawalker.com/van-richten-s-guide-to-ghosts-ad-d-ravenloft-accessory.pdf
    • http://www.gorillawalker.com/etsy-selling-get-ready-to-earn-on-etsy-start-your.pdf
    • http://www.gorillawalker.com/made-to-count-discovering-what-to-do-with-your-life.pdf
    • http://www.gorillawalker.com/negotiating-strategically-one-versus-all.pdf
    • http://www.gorillawalker.com/mutants-masterminds-gamemasters-kit.pdf
    • http://www.gorillawalker.com/the-curator-s-handbook.pdf
    • http://www.gorillawalker.com/hbr-s-10-must-reads-on-emotional-intelligence-unabridged-audible.pdf
    • http://www.gorillawalker.com/my-way-or-the-highway-the-micromanagement-survival-guide.pdf
    • http://www.gorillawalker.com/the-next-together.pdf
    • http://www.gorillawalker.com/new-complete-guide-to-wildlife-photography-how-to-get-close.pdf
    • http://www.gorillawalker.com/best-hikes-near-anchorage-best-hikes-near-series.pdf
    • http://www.gorillawalker.com/relational-models-of-the-lexicon-representing-knowledge-in-semantic-networks.pdf
    • http://www.gorillawalker.com/the-swords-of-babylon-matt-drake-6-volume-6.pdf
    • http://www.gorillawalker.com/bible-cover-purple-purse-style-large.pdf
    • http://www.gorillawalker.com/2015-amy-knapp-family-organizer.pdf
    • http://www.gorillawalker.com/stress-and-coping-in-autism.pdf
    • http://www.gorillawalker.com/treasury-operations-and-the-foreign-exchange-challenge-a-guide-to.pdf
    • http://www.gorillawalker.com/the-ultimate-chemical-equations-handbook-student-edition.pdf
    • http://www.gorillawalker.com/intelligent-and-adaptive-learning-systems-technology-enhanced-support-for-learners.pdf
    • http://www.gorillawalker.com/deal-breaker.pdf
    • http://www.gorillawalker.com/george-macdonald-an-anthology-365-readings.pdf
    • http://www.gorillawalker.com/shooting-eros.pdf
    • http://www.gorillawalker.com/the-challenge-of-world-hunger-environmental-issues-series.pdf
    • http://www.gorillawalker.com/comfortably-numb-the-inside-story-of-pink-floyd.pdf
    • http://www.gorillawalker.com/father-knows-less.pdf
    • http://www.gorillawalker.com/the-keepers-the-alchemy-series-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/pulse-digital-and-switching-waveforms-devices-and-circuits-for-their.pdf
    • http://www.gorillawalker.com/african-american-army-officers-of-world-war-i-a-vanguard.pdf
    • http://www.gorillawalker.com/pci-compliance-the-definitive-guide-print-replica-kindle-editi
    • 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/