Malicious PDF — malware analysis report

Static analysis result for SHA-256 7016633c3b944ccf…

MALICIOUS

PDF

36.5 KB Created: 2019-11-10 05:16:34 +03:00 Authoring application: Acrobat PDFMaker 7.0 for Excel (via Acrobat Distiller 7.0 (Windows))
MD5: f6802ca7a07455215b1c5b428a969ffa SHA-1: 7f568df464203635a88324064e10358bd92eb82f SHA-256: 7016633c3b944ccfd1da20ac86fd7834eb55fc17fe71d9ec5afeefbf7a333665
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute secondary payloads. The ML classifier also flagged this document as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a large number of potentially malicious or SEO-abused resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8218

Heuristics 3

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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-book-of-chittlehampton-celebrating-a-north-devon-parish.pdf
    • http://www.gorillawalker.com/between-two-worlds-the-art-of-preaching-in-the-twentieth.pdf
    • http://www.gorillawalker.com/it-s-a-wonderful-wife-sinclair-brothers-novel.pdf
    • http://www.gorillawalker.com/women-s-basketball-a-bibliography-of-the-guides-published-for.pdf
    • http://www.gorillawalker.com/virgin-diet-greek-recipes-and-virgin-diet-vitamix-recipes-2.pdf
    • http://www.gorillawalker.com/the-sacred-formulas-of-the-cherokees.pdf
    • http://www.gorillawalker.com/african-voices-of-the-atlantic-slave-trade-beyond-the-silence.pdf
    • http://www.gorillawalker.com/a-handbook-of-urbanization-in-india.pdf
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    • http://www.gorillawalker.com/reading-2007-grammar-and-writing-practice-book-grade-6-reading.pdf
    • http://www.gorillawalker.com/mock-stars-indie-comedy-and-the-dangerously-funny.pdf
    • http://www.gorillawalker.com/peru-and-the-inca-civilization.pdf
    • http://www.gorillawalker.com/ase-test-preparation-l1-advanced-engine-performance-ase-test-prep.pdf
    • http://www.gorillawalker.com/color-atlas-of-nonhuman-primate-histology.pdf
    • http://www.gorillawalker.com/using-plants-for-stormwater-management-a-green-infrastructure-guide-for.pdf
    • http://www.gorillawalker.com/artistic-the-art-of-redefining-a-label.pdf
    • http://www.gorillawalker.com/handbook-for-dental-hygienists.pdf
    • http://www.gorillawalker.com/the-21-day-belly-fix-the-doctor-designed-diet-plan.pdf
    • http://www.gorillawalker.com/why-is-english-like-that-historical-answers-to-hard-elt.pdf
    • http://www.gorillawalker.com/nonfiction-reading-comprehension-informational-reading-grades-2-3.pdf
    • http://www.gorillawalker.com/gothic-image-religious-art-in-france-of-the-thirt.pdf
    • http://www.gorillawalker.com/jesus-with-dirty-feet-a-down-to-earth-look-at.pdf
    • http://www.gorillawalker.com/harmonious-hearts.pdf
    • http://www.gorillawalker.com/aebersold-maiden-voyage-jazz-solos-for-tenor-sax-book-and.pdf
    • http://www.gorillawalker.com/a-favourite-collection-of-grimm-s-fairy-tales-cinderella-little.pdf
    • http://www.gorillawalker.com/the-walking-dead-spanish-language-edition-volume-5-tp-spanish.pdf
    • http://www.gorillawalker.com/transcritique-on-kant-and-marx.pdf
    • http://www.gorillawalker.com/the-day-of-the-dragonfly-kindle-edition.pdf
    • http://www.gorillawalker.com/eye-wonder-earth-eye-wonder.pdf
    • http://www.gorillawalker.com/passionate-subjects-split-subjects-in-twentieth-century-literature-in-chile.pdf
    • http://www.gorillawalker.com/incubation-suborned-by-rhyme-book-2.pdf
    • http://www.gorillawalker.com/hands-off-how-to-protect-our-children-from-predators.pdf
    • http://www.gorillawalker.com/censored-2016-the-top-censored-stories-and-media-analysis-of.pdf
    • http://www.gorillawalker.com/tigers-built-for-the-hunt-predator-profiles.pdf
    • http://www.gorillawalker.com/telemarketing-made-easy-the-ultimate-key-to-your-success-kindle.pdf
    • http://www.gorillawalker.com/missing-mabel-curl-up-and-dye-mystery-series-no-1.pdf
    • http://www.gorillawalker.com/the-heart-s-eye-emotional-influences-in-perception-and-attention.pdf
    • http://www.gorillawalker.com/own-your-cancer-a-take-charge-guide-for-the-recently.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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