Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa77658faeb16a1…

MALICIOUS

PDF

45.0 KB Created: 2019-01-06 08:09:16 +03:00 Authoring application: FrameMaker 12.0.2 (via Acrobat Distiller 11.0 (Windows))
MD5: f0648e51934cc6ce82fe41bd6e6f8d18 SHA-1: bbcfd4f585a28279e651a51f7e6383213b2fc3ae SHA-256: daa77658faeb16a1cdc431cf065c4d958589ac7c289a0c2d80647ded4bfe3511
90 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, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this document as malicious. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact nature of the malicious payload beyond the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7914

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-symmetric-group-representations-combinatorial-algorithms-and-symmetric-functions-wadsworth.pdf
    • http://www.gorillawalker.com/clep-analyzing-and-interpreting-literature-exam-secrets-study-guide-clep.pdf
    • http://www.gorillawalker.com/game-shooting-an-illustrated-history.pdf
    • http://www.gorillawalker.com/extended-electromagnetic-theory-space-charge-in-vacuo-and-the-rest.pdf
    • http://www.gorillawalker.com/teardrop-diary.pdf
    • http://www.gorillawalker.com/bible-genesis-gap-or-the-nephilim-false-teachings-or-errors.pdf
    • http://www.gorillawalker.com/flow-induced-vibration-of-circular-cylindrical-structures.pdf
    • http://www.gorillawalker.com/medical-transcription-2nd-edition-revised.pdf
    • http://www.gorillawalker.com/playa-del-carmen-tulum-the-riviera-maya-a-great-destination.pdf
    • http://www.gorillawalker.com/bruce-and-the-road-to-courage-mom-s-choice-award.pdf
    • http://www.gorillawalker.com/mountain-heart-soul-music-summit-o-brother-why-did-they.pdf
    • http://www.gorillawalker.com/facts-and-fakes-about-cuba-primary-source-edition.pdf
    • http://www.gorillawalker.com/obedience-to-authority-current-perspectives-on-the-milgram-paradigm.pdf
    • http://www.gorillawalker.com/active-middle-ear-implants-69-advances-in-oto-rhino-laryngology.pdf
    • http://www.gorillawalker.com/heaven-on-earth-the-varieties-of-the-millennial-experience.pdf
    • http://www.gorillawalker.com/war-and-peace-sparknotes-literature-guide-sparknotes-literature-guide-series.pdf
    • http://www.gorillawalker.com/the-ufo-whirling-card-helicopter-card-the-ultimate-floating-device.pdf
    • http://www.gorillawalker.com/trash-sex-magic.pdf
    • http://www.gorillawalker.com/complete-food-companion-2007.pdf
    • http://www.gorillawalker.com/the-big-midweek-life-inside-the-fall.pdf
    • http://www.gorillawalker.com/narrative-in-culture-the-uses-of-storytelling-in-the-sciences.pdf
    • http://www.gorillawalker.com/classical-duets-for-clarinet-clarinet.pdf
    • http://www.gorillawalker.com/zhu-rongji-on-the-record-the-road-to-reform-1998.pdf
    • http://www.gorillawalker.com/the-feasts-of-the-lord-the-feasts-fasts-and-festivals.pdf
    • http://www.gorillawalker.com/crimes-of-passion-hot-blood-series.pdf
    • http://www.gorillawalker.com/proclaiming-the-messiah-the-life-and-letters-of-paul-of.pdf
    • http://www.gorillawalker.com/alice-through-the-looking-glass.pdf
    • http://www.gorillawalker.com/breaking-the-code-of-the-feasts-amazing-prophetic-information-encoded.pdf
    • http://www.gorillawalker.com/jct-intermediate-sub-contract-conditions-2015-icsub-c.pdf
    • http://www.gorillawalker.com/us-army-technical-manual-tm-5-4320-258-34-pump.pdf
    • http://www.gorillawalker.com/the-story-of-pixar-built-for-success.pdf
    • http://www.gorillawalker.com/big-little-book-of-playboy-limericks.pdf
    • http://www.gorillawalker.com/searching-for-place-ukrainian-displaced-persons-canada-and-the-migration.pdf
    • http://www.gorillawalker.com/encase-computer-forensics-the-official-ence-encasecertified-examiner-study-guide.pdf
    • http://www.gorillawalker.com/dear-folks-letters-home-from-world-war-ii-in-the.pdf
    • http://www.gorillawalker.com/invertebrate-palaeontology-evolution.pdf
    • http://www.gorillawalker.com/textiles-for-you.pdf
    • http://www.gorillawalker.com/three-novels.pdf
    • http://www.gorillawalker.com/a-history-of-scottish-women-s-writing.pdf
    • http://www.gorillawalker.com/time-travel-true-stories-amazing-real-life-stories-in-the.pdf
    • http://www.gorill
    • 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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