Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3756302e325e979…

MALICIOUS

PDF

40.7 KB Created: 2019-03-17 10:58:07 +03:00 Authoring application: LaTeX with hyperref package (via xdvipdfmx (0.7.8))
MD5: 49b45c920b7d7aa9703dd39a9fc4c04d SHA-1: 1613b4efe120b930a2ad5c91ab63a84f960d470d SHA-256: b3756302e325e9794936246badc256b75c6dc8040c6158ccb9c2a573d6626771
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of external links, primarily pointing to PDF documents on www.gorillawalker.com. This behavior is indicative of a link farm or a mechanism to distribute malicious content indirectly. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact malicious intent beyond the link farm. The primary attack pattern observed is the distribution of numerous external links.

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/collection-management-for-the-21st-century-a-handbook-for-librarians.pdf
    • http://www.gorillawalker.com/the-greek-way-of-life.pdf
    • http://www.gorillawalker.com/oscar-oso-bobby-bear-spanish-edition.pdf
    • http://www.gorillawalker.com/love-s-fire-holy-ghost-tales-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/geotechnical-engineering-analysis-and-evaluation-mcgraw-hill-series-in-geotechnical.pdf
    • http://www.gorillawalker.com/pursuing-alternative-development-indigenous-people-ethnic-organization-and-agency-digital.pdf
    • http://www.gorillawalker.com/spiritual-thoughts-on-material-things.pdf
    • http://www.gorillawalker.com/introduction-to-the-analysis-of-metric-spaces-australian-mathematical-society.pdf
    • http://www.gorillawalker.com/the-special-one-the-wit-and-wisdom-of-jose-mourinho.pdf
    • http://www.gorillawalker.com/faked-to-death-simon-kirby-jones-mysteries-book-2.pdf
    • http://www.gorillawalker.com/transsexual-sex-bundle.pdf
    • http://www.gorillawalker.com/demonstrating-benefits-of-wellhad-protections-programs.pdf
    • http://www.gorillawalker.com/cooking-with-herbs-spices-an-herb-and-spice-cook-book.pdf
    • http://www.gorillawalker.com/a-semicha-aid-for-learning-the-laws-of-melicha-semicha.pdf
    • http://www.gorillawalker.com/the-human-impact-reader-readings-and-case-studies.pdf
    • http://www.gorillawalker.com/2009-chinese-life-insurance-regulatory-and-development-report-chinese-edition.pdf
    • http://www.gorillawalker.com/communities-magazine-87-summer-1995-love-romance-and-sex-kindle.pdf
    • http://www.gorillawalker.com/a-baptist-manual-of-polity-and-practice-kindle-edition.pdf
    • http://www.gorillawalker.com/eutanasia.pdf
    • http://www.gorillawalker.com/the-pelican-brief-a-novel.pdf
    • http://www.gorillawalker.com/proza-russian-edition.pdf
    • http://www.gorillawalker.com/boxers-boxers-saints-kindle-edition.pdf
    • http://www.gorillawalker.com/american-photography-oxford-history-of-art.pdf
    • http://www.gorillawalker.com/jack-the-ripper-the-casebook.pdf
    • http://www.gorillawalker.com/summer-of-love-semper-fi.pdf
    • http://www.gorillawalker.com/historic-channel-change-of-kanab-creek.pdf
    • http://www.gorillawalker.com/concilium-190-the-fate-of-confession.pdf
    • http://www.gorillawalker.com/homelessness-whose-problem-is-it-issue-and-debate.pdf
    • http://www.gorillawalker.com/sarah-a-mission-of-love-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/grebes-podicipedidae-bird-families-of-the-world.pdf
    • http://www.gorillawalker.com/professional-kitchen-design.pdf
    • http://www.gorillawalker.com/top-knife-the-art-and-craft-of-trauma-surgery-by.pdf
    • http://www.gorillawalker.com/amazing-airmen-canadian-flyers-in-the-second-world-war-unedited.pdf
    • http://www.gorillawalker.com/nigeria-nigeria-around-the-world.pdf
    • http://www.gorillawalker.com/freddy-the-detective-freddy-the-pig.pdf
    • http://www.gorillawalker.com/contextos-del-ser-spanish-edition.pdf
    • http://www.gorillawalker.com/tecnicas-de-rehabilitacion-en-la-medicina-deportiva-spanish-edition.pdf
    • http://www.gorillawalker.com/the-powerscore-lsat-reading-comprehension-bible-workbook.pdf
    • http://www.gorillawalker.com/amsterdam-netherlands-1-8-103-pocket-map-cito.pdf
    • http://www.gorillawalker.com/dante-in-the-twentieth-century-dante-studies.pdf
    • http://www.gorillawalker.com/the-special-one-the-wit
    • 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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