Malicious PDF — malware analysis report

Static analysis result for SHA-256 12dc6265e4a70b3c…

MALICIOUS

PDF

42.4 KB Created: 2018-12-28 08:08:39 +03:00 Authoring application: AH XSL Formatter V6.1 MR6 for Windows (x64) : 6.1.11.18624 (via Antenna House PDF Output Library 6.1.610 (Windows (x64)))
MD5: 907a8f424664692202b02ab9af87c550 SHA-1: 40c539e191f77e684676cdb8d6ea272e503546ab SHA-256: 12dc6265e4a70b3c95e937c47874c1e6e75b4832457b66789ef1245812fd4766
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files hosted on the same domain, indicative of a link farm. This technique is often used to manipulate search engine rankings or to distribute malicious content. While no scripts were extracted, the sheer volume of links and the ML classifier's high confidence score suggest a malicious intent, likely related to distributing further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/structural-geology-and-volcanism-of-owens-valley-region-caligornia-a.pdf
    • http://www.gorillawalker.com/the-gate-in-the-wall.pdf
    • http://www.gorillawalker.com/rancho-la-brea-a-record-of-pleistocene-life-in-california.pdf
    • http://www.gorillawalker.com/the-adolescent-girl.pdf
    • http://www.gorillawalker.com/the-nuclear-shell-model-study-edition.pdf
    • http://www.gorillawalker.com/how-to-protect-your-child-benefit.pdf
    • http://www.gorillawalker.com/chosen-by-a-horse-how-a-broken-horse-fixed-a.pdf
    • http://www.gorillawalker.com/quantum-mechanics-and-the-particles-of-nature-an-outline-for.pdf
    • http://www.gorillawalker.com/the-dark-crusade.pdf
    • http://www.gorillawalker.com/special-functions-for-scientists-and-engineers-dover-books-on-mathematics.pdf
    • http://www.gorillawalker.com/meaningful-use-essentials-your-first-2-years.pdf
    • http://www.gorillawalker.com/bombshell-the-life-and-death-of-jean-harlow.pdf
    • http://www.gorillawalker.com/too-hot-to-handle-sweet-wind-wild-wind-too-hot.pdf
    • http://www.gorillawalker.com/evaluation-of-cross-language-information-retrieval-systems-second-workshop-of.pdf
    • http://www.gorillawalker.com/a-jewish-story.pdf
    • http://www.gorillawalker.com/drum-aerobics-paperback-2010-author-andy-ziker.pdf
    • http://www.gorillawalker.com/emerging-market-real-estate-investment-investing-in-china-india-and.pdf
    • http://www.gorillawalker.com/the-pianist-s-guide-to-practical-technique-vol-1-111.pdf
    • http://www.gorillawalker.com/limnology-of-lake-lansing-michigan-michigan-state-university-institute-of.pdf
    • http://www.gorillawalker.com/the-battle-lord-s-lady-the-battle-lord-saga-book.pdf
    • http://www.gorillawalker.com/wolf-a-false-memoir.pdf
    • http://www.gorillawalker.com/adobe-flash-cs4-professional-classroom-in-a-book.pdf
    • http://www.gorillawalker.com/fodor-s-miami-miami-beach-4th-ed.pdf
    • http://www.gorillawalker.com/cciev5-advanced-workbook-first-edition-covering-version-4-and-5.pdf
    • http://www.gorillawalker.com/telecommunications-cabling-installation.pdf
    • http://www.gorillawalker.com/a-girl-named-helen-keller-turtleback-school-library-binding-edition.pdf
    • http://www.gorillawalker.com/claimed-by-vikings-3-story-bundle-first-time-historical-group.pdf
    • http://www.gorillawalker.com/biochemie-eine-einf-hrung-mit-40-lerneinheiten-springer-lehrbuch-german.pdf
    • http://www.gorillawalker.com/bar-manual-civil-litigation-2005-6-blackstone-bar-manual.pdf
    • http://www.gorillawalker.com/home-plumbing-the-complete-handbook.pdf
    • http://www.gorillawalker.com/27-pieces-sonatinas-and-sonatas-vol-1-for-piano-kalmus.pdf
    • http://www.gorillawalker.com/the-tourists-shilling-handy-guide-to-scotland-by-w-paterson.pdf
    • http://www.gorillawalker.com/the-affirmative-action-hoax-diversity-the-importance-of-character-and.pdf
    • http://www.gorillawalker.com/the-tyranny-of-the-two-party-system.pdf
    • http://www.gorillawalker.com/consumer-behavior-in-fashion-2nd-edition-2nd-second-edition-by.pdf
    • http://www.gorillawalker.com/go-east-young-man-imagining-the-american-west-as-the.pdf
    • http://www.gorillawalker.com/through-life-engineering-services-motivation-theory-and-practice-decision-engineering.pdf
    • http://www.gorillawalker.com/the-trickster-and-the-troll.pdf
    • http://www.gorillawalker.com/event-horizon-the-perseid-collapse-post-apocalyptic-series-book-2.pdf
    • http://www.gorillawalker.com/the-minimalist-program-current-studies-in-linguistics.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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