Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fcb3596ac04803e…

MALICIOUS

PDF

43.0 KB Created: 2019-03-17 10:52:59 +03:00 Authoring application: Adobe InDesign CS5.5 (7.5.1) (via Adobe PDF Library 9.9)
MD5: 48ff344c154e19c67cf9e643188aee61 SHA-1: eef0f5ec4b078b580a2c3ee54db0b597d58dc23d SHA-256: 1fcb3596ac04803e0c12d96c08c7e6a85fd44f8a86b7f12ca6d5f00e3b7bfe38
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a large number of external links, suggesting a link farm or distribution mechanism. The ML classifier also indicated a high probability of maliciousness. While no scripts were extracted, the sheer volume of embedded URLs points towards an attempt to manipulate search engine results or redirect users to malicious content hosted on the 'gorillawalker.com' domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/the-scales-of-six.pdf
    • http://www.gorillawalker.com/barriers-to-more-active-contractor-participation-in-the-department-of.pdf
    • http://www.gorillawalker.com/the-complete-birder-a-guide-to-better-birding.pdf
    • http://www.gorillawalker.com/burned-by-passion-billionaire-bad-boy-romance.pdf
    • http://www.gorillawalker.com/the-rhetoric-of-fiction.pdf
    • http://www.gorillawalker.com/aa-street-by-street-harrogate.pdf
    • http://www.gorillawalker.com/the-ocean-world-of-jacques-cousteau.pdf
    • http://www.gorillawalker.com/advanced-unix-programming-2nd-edition.pdf
    • http://www.gorillawalker.com/the-complete-works-of-harriet-taylor-mill.pdf
    • http://www.gorillawalker.com/the-electrical-resistivity-of-metals-and-alloys-cambridge-solid-state.pdf
    • http://www.gorillawalker.com/the-sound-of-music-piano-vocal-guitar-score.pdf
    • http://www.gorillawalker.com/warship-pictorial-no-35-ticonderoga-class-cruisers.pdf
    • http://www.gorillawalker.com/spelling-the-written-word-sd100-administrator-s-guide.pdf
    • http://www.gorillawalker.com/r-f-k-must-die-chasing-the-mystery-of-the.pdf
    • http://www.gorillawalker.com/wit-and-wisdom-of-the-immortals.pdf
    • http://www.gorillawalker.com/demolition-and-reuse-of-concrete-and-masonry-demolition-reuse-conc.pdf
    • http://www.gorillawalker.com/solvang-a-guide-to-the-danish-capital-of-america-tourist.pdf
    • http://www.gorillawalker.com/an-essay-on-the-shaking-palsy-dodo-press.pdf
    • http://www.gorillawalker.com/complete-mba-for-dummies.pdf
    • http://www.gorillawalker.com/the-daylight-marriage.pdf
    • http://www.gorillawalker.com/a-course-in-number-theory.pdf
    • http://www.gorillawalker.com/magic-lantern-guides-nikon-d300s-multimedia-workshop-hardcover.pdf
    • http://www.gorillawalker.com/the-arsenal-of-democracy-fdr-detroit-and-an-epic-quest.pdf
    • http://www.gorillawalker.com/rocky-mountain-trees-a-handbook-of-the-native-species-with.pdf
    • http://www.gorillawalker.com/gis-for-environmental-stewardship-and-streamlining-an-overview-of-state.pdf
    • http://www.gorillawalker.com/night-preacher-louise-a-vernon.pdf
    • http://www.gorillawalker.com/if-i-could-turn-back-time.pdf
    • http://www.gorillawalker.com/staar-eoc-english-ii-assessment-flashcard-study-system-staar-test.pdf
    • http://www.gorillawalker.com/jefferson-webster-s-specialty-crossword-puzzles.pdf
    • http://www.gorillawalker.com/colossians-and-philemon-a-handbook-on-the-greek-text-baylor.pdf
    • http://www.gorillawalker.com/ben-schonzeit-flowers-2004-calendar.pdf
    • http://www.gorillawalker.com/oblique-derivative-problems-for-elliptic-equations.pdf
    • http://www.gorillawalker.com/cuckold-chronicles-volume-2-cheating-hotwife-interracial-cuckquean-erotica-bundle.pdf
    • http://www.gorillawalker.com/the-bantams.pdf
    • http://www.gorillawalker.com/the-new-centurions.pdf
    • http://www.gorillawalker.com/spqr-a-history-of-ancient-rome.pdf
    • http://www.gorillawalker.com/education-management-and-management-science-iraics-proceedings.pdf
    • http://www.gorillawalker.com/guyana-suriname-french-guiana-1-850-000-international-travel-maps.pdf
    • http://www.gorillawalker.com/interpretive-ethnography-ethnographic-practices-for-the-21st-century.pdf
    • http://www.gorillawalker.com/palm-springs-confidential-playground-of-the-stars.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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