Malicious PDF — malware analysis report

Static analysis result for SHA-256 486e31d0e7d307f3…

MALICIOUS

PDF

33.0 KB Created: 2020-01-17 19:19:36 +03:00 Authoring application: PScript5.dll Version 5.2 (via Acrobat Distiller 8.0.0 (Windows))
MD5: a790327f81827d94d8280246e02c5f93 SHA-1: 5f382b943908da966ab5296aa27e98b499690e9f SHA-256: 486e31d0e7d307f314e2bbdbb0395d2f87694d21548089b7552da2390e63b643
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a significant number of embedded URLs, indicative of a link farm. The heuristic PDF_SEO_LINK_FARM specifically identifies this pattern, suggesting the document's primary purpose is to host these links. No scripts were extracted from this sample, and the document body was heavily obfuscated, making it difficult to determine the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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/g-spot-2-the-seven-deadly-sins-holiday-box-set.pdf
    • http://www.gorillawalker.com/kubla-khan-the-emperor-of-everything.pdf
    • http://www.gorillawalker.com/the-material-gene-gender-race-and-heredity-after-the-human.pdf
    • http://www.gorillawalker.com/american-presidential-china-the-robert-l-mcneil-jr-collection-at.pdf
    • http://www.gorillawalker.com/electricity-and-magnetism-principles-of-physics-series.pdf
    • http://www.gorillawalker.com/wheater-s-functional-histology-a-text-and-colour-atlas-5th.pdf
    • http://www.gorillawalker.com/the-water-of-life-a-treatise-on-urine-therapy-isbn.pdf
    • http://www.gorillawalker.com/the-contender-andrew-cuomo-a-biography.pdf
    • http://www.gorillawalker.com/beaumont-the-right-side-of-texas.pdf
    • http://www.gorillawalker.com/archaeological-mexico-a-guide-to-ancient-cities-and-sacred-sites.pdf
    • http://www.gorillawalker.com/zagatsurvey-1997-update-hawaii-restaurants-annual.pdf
    • http://www.gorillawalker.com/no-roads-leads-to-rome.pdf
    • http://www.gorillawalker.com/equine-exercise-physiology-the-science-of-exercise-in-the-athletic.pdf
    • http://www.gorillawalker.com/a-dictionary-of-cultural-and-critical-theory.pdf
    • http://www.gorillawalker.com/making-the-fall-an-intimate-account-of-elia-kazan-and.pdf
    • http://www.gorillawalker.com/star-chart.pdf
    • http://www.gorillawalker.com/blackstone-s-guide-to-the-coroners-and-justice-act-2009.pdf
    • http://www.gorillawalker.com/goodbye-natalie-goodbye-splendour.pdf
    • http://www.gorillawalker.com/jean-auguste-dominique-ingres-160-neoclassical-paintings-neoclassicism-kindle-edition.pdf
    • http://www.gorillawalker.com/a-promise-for-miriam-the-pebble-creek-amish-series.pdf
    • http://www.gorillawalker.com/laws-of-barbados-volume-3-issue-38.pdf
    • http://www.gorillawalker.com/mechanisms-of-inorganic-and-organometallic-reactions-volume-2.pdf
    • http://www.gorillawalker.com/the-merger-the-conglomeration-of-international-organized-crime.pdf
    • http://www.gorillawalker.com/army-combined-arms-breaching-operations-kindle-edition.pdf
    • http://www.gorillawalker.com/the-only-one-i-love-a-short-story-of-love.pdf
    • http://www.gorillawalker.com/doom-battlebook-secrets-of-the-games.pdf
    • http://www.gorillawalker.com/by-todd-downs-the-bicycling-guide-to-complete-bicycle-maintenance.pdf
    • http://www.gorillawalker.com/boston-mob-the-rise-and-fall-of-the-new-england.pdf
    • http://www.gorillawalker.com/george-orwell-diaries.pdf
    • http://www.gorillawalker.com/gravitics-the-physics-of-the-behavior-and-control-of-gravitation.pdf
    • http://www.gorillawalker.com/survival-basics-are-you-prepared-to-survive.pdf
    • http://www.gorillawalker.com/boyd-5e-text-prepu-plus-pillitteri-6e-prepu-package.pdf
    • http://www.gorillawalker.com/what-i-wish-my-mother-had-told-me-about-men.pdf
    • http://www.gorillawalker.com/principles-of-modern-soccer.pdf
    • http://www.gorillawalker.com/the-meditations-of-marcus-auerlius-selections-annotated-explained-skylight-illuminations.pdf
    • http://www.gorillawalker.com/your-personal-guide-to-motorcycle-wrecks-in-kentucky-and-indiana.pdf
    • http://www.gorillawalker.com/imp-problems.pdf
    • http://www.gorillawalker.com/doctor-who-zeitreisen-1-die-todesgrube-german-edition.pdf
    • http://www.gorillawalker.com/jass-valentin-st-cyr-mysteries.pdf
    • http://www.gorillawalker.com/total-recovery-breaking-the-cycle-of-chronic-pain-and-depression.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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