Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1378cce3ce28299…

MALICIOUS

PDF

43.7 KB Created: 2018-12-15 08:38:12 +03:00 Authoring application: LaTeX with hyperref package (via pdfTeX-1.40.9)
MD5: 208427a5458835dad12e99426b4e4719 SHA-1: 6bc51e4166ab4704a1ee30ffcdd3e33c70c78d1a SHA-256: d1378cce3ce28299a94b612b439ebc4d5f598a08840f0f110be06372a8513373
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine results or to serve as a gateway to other malicious content hosted on the 'gorillawalker.com' domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8452

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-mourning-trail-book-2-of-the-vikings-trilogy-volume.pdf
    • http://www.gorillawalker.com/adriana-lecouvreur-act-i-monolog-baritone-ecco-il-monologo-oboe.pdf
    • http://www.gorillawalker.com/penguin-life-surviving-with-style-in-the-south-atlantic.pdf
    • http://www.gorillawalker.com/ncaa-2003-wrestling-rules-and-interpretations-ncaa-wrestling-rules-and.pdf
    • http://www.gorillawalker.com/invention-by-design-how-engines-get-from-thought-to-thing.pdf
    • http://www.gorillawalker.com/let-s-find-pokemon.pdf
    • http://www.gorillawalker.com/psychiatric-secrets-questions-you-will-be-asked-on-rounds-in.pdf
    • http://www.gorillawalker.com/hacking-windows-vista-extremetech.pdf
    • http://www.gorillawalker.com/joni-mitchell-hits-piano-vocal-chords.pdf
    • http://www.gorillawalker.com/better-day-coming-blacks-and-equality-1890-2000.pdf
    • http://www.gorillawalker.com/more-german-lyric-language-audio-series-2.pdf
    • http://www.gorillawalker.com/asian-legal-revivals-lawyers-in-the-shadow-of-empire-chicago.pdf
    • http://www.gorillawalker.com/chosen-for-life-the-case-for-divine-election.pdf
    • http://www.gorillawalker.com/the-medieval-dragon-the-nature-of-the-beast-in-germanic.pdf
    • http://www.gorillawalker.com/guide-to-microbiological-control-in-pharmaceuticals-and-medical-devices-second.pdf
    • http://www.gorillawalker.com/church-and-ministry-strategic-planning-from-concept-to-success-haworth.pdf
    • http://www.gorillawalker.com/eres-tu-senor.pdf
    • http://www.gorillawalker.com/industrial-applications-of-fuzzy-technology.pdf
    • http://www.gorillawalker.com/unwavering-strength-volume-2-stories-to-warm-your-heart-and.pdf
    • http://www.gorillawalker.com/mary-poppins-she-wrote-the-life-of-p-l-travers.pdf
    • http://www.gorillawalker.com/how-to-prepare-for-the-auditing-section-of-the-c.pdf
    • http://www.gorillawalker.com/design-of-medical-electronic-devices.pdf
    • http://www.gorillawalker.com/robin-wood-s-cores-recycled.pdf
    • http://www.gorillawalker.com/when-victims-become-killers-colonialism-nativism-and-the-genocide-in.pdf
    • http://www.gorillawalker.com/number-theory-and-analysis-a-collection-of-papers-in-honor.pdf
    • http://www.gorillawalker.com/taxi-driver-york-film-notes.pdf
    • http://www.gorillawalker.com/the-last-great-race-champions-of-the-iditarod-sled-dog.pdf
    • http://www.gorillawalker.com/night-watch-discworld.pdf
    • http://www.gorillawalker.com/dangerous-digestion-the-politics-of-american-dietary-advice-california-studies.pdf
    • http://www.gorillawalker.com/elena-dorfman-empire-falling.pdf
    • http://www.gorillawalker.com/lighting-for-photography-techniques-for-studio-and-location-shoots-paperback.pdf
    • http://www.gorillawalker.com/fluorescent-methods-to-study-biological-membranes-springer-series-on-fluorescence.pdf
    • http://www.gorillawalker.com/fundamentals-of-hvac-building-systems-design-vol-2.pdf
    • http://www.gorillawalker.com/developing-a-managed-care-business-plan.pdf
    • http://www.gorillawalker.com/sketches-and-chronicles-of-the-town-of-litchfield-connecticut-historical.pdf
    • http://www.gorillawalker.com/plutarch-lives-v-agesilaus-and-pompey-pelopidas-and-marcellus-loeb.pdf
    • http://www.gorillawalker.com/monkey-and-elephant-go-gadding-candlewick-sparks.pdf
    • http://www.gorillawalker.com/requiem-ssa-vocal-score.pdf
    • http://www.gorillawalker.com/handmade-gatherings-recipes-and-crafts-for-seasonal-celebrations-and-potluck.pdf
    • http://www.gorillawalker.com/easy-cakes-biscuits-the-australian-women-s-weekly-minis.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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