Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c03ecbaaf1c5a92…

MALICIOUS

PDF

45.3 KB Created: 2019-03-17 07:54:48 +03:00 Authoring application: - (via Xerox Fiery DC250 2.0[EFI Cyclone])
MD5: 350177f79a55849977869a95329c62ee SHA-1: 893c164e1e19400fb952480f860e6390be7d393d SHA-256: 4c03ecbaaf1c5a92f7d4adaa6972e59463b7aff2cd389cd33f3d46bb7b4b0b6f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was not readable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8439

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/billionaire-s-trust-billionaire-erotic-romance-never-never-man-series.pdf
    • http://www.gorillawalker.com/esa-pekka-salonen-insomnia-for-orchestra-score.pdf
    • http://www.gorillawalker.com/dream-journal-for-reflection-and-lucid-dreaming-7-x10-notebook.pdf
    • http://www.gorillawalker.com/bible-crafts-for-christian-kids.pdf
    • http://www.gorillawalker.com/neurotically-yours-the-complete-collection.pdf
    • http://www.gorillawalker.com/cpt-2013-express-reference-coding-card-urology-nephrology.pdf
    • http://www.gorillawalker.com/in-a-pale-blue-light.pdf
    • http://www.gorillawalker.com/elvis-lives-and-other-anagrams.pdf
    • http://www.gorillawalker.com/nhl-official-guide-and-record-book-1992-1993-nhl-official.pdf
    • http://www.gorillawalker.com/lost-in-transition-suny-series-in-global-modernity.pdf
    • http://www.gorillawalker.com/lean-auditing-driving-added-value-and-efficiency-in-internal-audit.pdf
    • http://www.gorillawalker.com/earth-the-world-atlas-concise.pdf
    • http://www.gorillawalker.com/a-handbook-for-travellers-in-turkey-describing-constantinople-european-turkey.pdf
    • http://www.gorillawalker.com/lafcadio-hearn-american-writings-library-of-america-no-190.pdf
    • http://www.gorillawalker.com/the-uniforms-insignia-and-ephemera-of-the-home-front-in.pdf
    • http://www.gorillawalker.com/raising-curious-kids-over-100-simple-activities-to-develop-your.pdf
    • http://www.gorillawalker.com/animal-models-disorders-of-eating-behaviour-and-body-composition.pdf
    • http://www.gorillawalker.com/the-masks-of-god-complete-four-volume-set.pdf
    • http://www.gorillawalker.com/color-atlas-and-synopsis-of-electrophysiology.pdf
    • http://www.gorillawalker.com/the-doctor-s-oath-an-essay-in-the-history-of.pdf
    • http://www.gorillawalker.com/maths-for-practice-and-revision-bk-4.pdf
    • http://www.gorillawalker.com/dougy-library-edition.pdf
    • http://www.gorillawalker.com/living-in-the-seventh-day-kindle-edition.pdf
    • http://www.gorillawalker.com/let-them-eat-cake-marketing-luxury-to-the-masses-as.pdf
    • http://www.gorillawalker.com/aviation-meteorolgy-unscrambled-for-vfr-ifr-operations-certifications-ratings.pdf
    • http://www.gorillawalker.com/diffusion-of-innovations-fourth-edition.pdf
    • http://www.gorillawalker.com/biomechanics-of-spine-stabilization.pdf
    • http://www.gorillawalker.com/the-arab-lobby-the-invisible-alliance-that-undermines-america-s.pdf
    • http://www.gorillawalker.com/the-bomb-nuclear-weapons-in-their-historical-strategic-and-ethical.pdf
    • http://www.gorillawalker.com/healing-wounded-emotions-overcoming-life-s-hurts-inspirational-reading-for.pdf
    • http://www.gorillawalker.com/zigarren-herstellung-geschichte-geheimnisse-german-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/design-of-concrete-structures-with-stress-fields.pdf
    • http://www.gorillawalker.com/the-mystery-of-numbers.pdf
    • http://www.gorillawalker.com/out-of-the-woods-a-true-story.pdf
    • http://www.gorillawalker.com/in-charge.pdf
    • http://www.gorillawalker.com/medicare-may-cover-more-colorectal-cancer-tests-rule-opens-the.pdf
    • http://www.gorillawalker.com/el-yo-y-los-mecanismos-de-defensa-spanish-edition.pdf
    • http://www.gorillawalker.com/ageing-and-invisibility-volume-7-ambient-intelligence-and-smart-environments.pdf
    • http://www.gorillawalker.com/china-and-mongolia-world-travel-maps.pdf
    • http://www.gorillawalker.com/franchise-law-firms-and-the-transformation-of-personal-legal-services.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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