Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f805735ae6ce722…

MALICIOUS

PDF

45.0 KB Created: 2018-11-30 20:08:49 +03:00 Authoring application: TeX (via pdfTeX-1.40.9)
MD5: 19dbb5298593afd595dcea63bab082c7 SHA-1: bb4261ce466642048fb15d6202bd90426b438c1e SHA-256: 3f805735ae6ce72242f3d2e42786cac20759d0b2a34c0eff521e83730ed5178b
90 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a large number of embedded external links, suggesting a link farm or a method to distribute malicious content. The ML classifier also flagged the PDF as malicious. While no scripts were extracted, the sheer volume of links to PDFs on the same domain points to a coordinated effort to host or link to potentially harmful documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8634

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/rules-compendium-dungeons-dragons-d20-3-5-fantasy-roleplaying.pdf
    • http://www.gorillawalker.com/kartellrecht-in-den-usa-und-deutschland-antitrust-law-in-germany.pdf
    • http://www.gorillawalker.com/as-long-as-the-sun-shines-and-water-flows-a.pdf
    • http://www.gorillawalker.com/baby-bar-kit-law-school-e-book-electronic-book-lana.pdf
    • http://www.gorillawalker.com/juices.pdf
    • http://www.gorillawalker.com/geometry-connections-version-3-0-volume-2.pdf
    • http://www.gorillawalker.com/an-introduction-to-hilbert-space-cambridge-mathematical-textbooks.pdf
    • http://www.gorillawalker.com/interrail-non-stop-german-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/fundamentals-of-telephony-tm-11-678-department-of-the-army.pdf
    • http://www.gorillawalker.com/the-act-of-baptism-in-the-history-of-the-christian.pdf
    • http://www.gorillawalker.com/the-insomnia-solution-your-step-by-step-guide-to-getting.pdf
    • http://www.gorillawalker.com/racing-pigeons.pdf
    • http://www.gorillawalker.com/the-banners-of-the-champions-an-anthology-of-medieval-arabic.pdf
    • http://www.gorillawalker.com/reliability-based-design-of-wood-structures-structural-research-series.pdf
    • http://www.gorillawalker.com/icky-animals-small-and-gross.pdf
    • http://www.gorillawalker.com/the-definitive-everly-brothers-chord-songbook-kindle-edition.pdf
    • http://www.gorillawalker.com/principles-of-physical-geology.pdf
    • http://www.gorillawalker.com/report-from-iron-mountain.pdf
    • http://www.gorillawalker.com/the-politics-of-gender-in-victorian-britain-masculinity-political-culture.pdf
    • http://www.gorillawalker.com/sg-spiritual-gifts-volumes-1-4-1858-1860-1864-kindle.pdf
    • http://www.gorillawalker.com/the-care-and-keeping-of-you-2-journal-american-girl.pdf
    • http://www.gorillawalker.com/lady-chatterley-s-lover-by-d-h-lawrence-restored-modern.pdf
    • http://www.gorillawalker.com/rome-french-edition.pdf
    • http://www.gorillawalker.com/hive-mind-how-your-nation-146-s-iq-matters-so.pdf
    • http://www.gorillawalker.com/q-skills-for-success-intro-level-listening-speaking-student-book.pdf
    • http://www.gorillawalker.com/grammar-the-structure-of-language.pdf
    • http://www.gorillawalker.com/manual-of-peripheral-vascular-intervention.pdf
    • http://www.gorillawalker.com/dictionary-of-food-microbiology.pdf
    • http://www.gorillawalker.com/chantal-akerman-moving-through-time-and-space.pdf
    • http://www.gorillawalker.com/isabella-braveheart-of-france-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/direcci.pdf
    • http://www.gorillawalker.com/a1-toefl-writing-ibt-korean-edition.pdf
    • http://www.gorillawalker.com/ruslan-and-lyudmila.pdf
    • http://www.gorillawalker.com/new-evidence-on-the-relationship-between-race-and-mortgage-default.pdf
    • http://www.gorillawalker.com/the-walking-plague-trilogy-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/healing-yourself-with-light-how-to-connect-with-the-angelic.pdf
    • http://www.gorillawalker.com/180-essential-vocabulary-words-for-3rd-grade-independent-learning-packets.pdf
    • http://www.gorillawalker.com/blood-dark-track-a-family-history.pdf
    • http://www.gorillawalker.com/500-days-math-addition-series-five-2-digit-addends-daily.pdf
    • http://www.gorillawalker.com/extracts-ms-from-rural-sketches-of-minnesota-the-el-doradoof.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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