Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aff13d49bae1c6f…

MALICIOUS

PDF

41.4 KB Created: 2019-03-17 03:42:05 +03:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 7.0.5 (Windows))
MD5: 30e5ab9a11c05d5f0d83dc2c09b766d0 SHA-1: aeab0d141d4ce472bd2933f6be5c0e7fda3f2465 SHA-256: 8aff13d49bae1c6f89bf3df1265f02c8880af66d2d73933ddec61c87fcb19ae9
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier as malicious and contains a large number of embedded links to external PDF files. The heuristic 'PDF_SEO_LINK_FARM' indicates the document's primary purpose is to link to numerous external resources, likely to manipulate search engine rankings or distribute further malicious content. The embedded URLs point to various PDF documents hosted on 'gorillawalker.com'. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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-holmes-manual.pdf
    • http://www.gorillawalker.com/five-english-reformers.pdf
    • http://www.gorillawalker.com/2015-supercoder-illustrated-for-neurology-neurosurgery.pdf
    • http://www.gorillawalker.com/rocket-dynamics-and-space-flight.pdf
    • http://www.gorillawalker.com/systems-theory-in-action-applications-to-individual-couple-and-family.pdf
    • http://www.gorillawalker.com/word-play-for-kids-super-fun.pdf
    • http://www.gorillawalker.com/the-cardinal-part-one.pdf
    • http://www.gorillawalker.com/uke-tabs-for-beginner-what-child-is-this-greensleeves-key.pdf
    • http://www.gorillawalker.com/epica-de-san-sebastian-del-pepino-spanish-edition.pdf
    • http://www.gorillawalker.com/gok-s-wok.pdf
    • http://www.gorillawalker.com/the-healthy-for-life-cookbook.pdf
    • http://www.gorillawalker.com/american-history-by-era-prosperity-depression-and-war-1920-1945.pdf
    • http://www.gorillawalker.com/college-grad-job-hunter-insider-techniques-and-tactics-for-finding.pdf
    • http://www.gorillawalker.com/raleigh-city-slicker.pdf
    • http://www.gorillawalker.com/to-err-is-azrin-mission-4-black-ocean-kindle-edition.pdf
    • http://www.gorillawalker.com/an-inside-look-at-america-s-teams-meet-the-women.pdf
    • http://www.gorillawalker.com/solar-energy-for-the-terrestrial-generation-of-electricity-hearing-ninety.pdf
    • http://www.gorillawalker.com/christianity-vs-islam-a-muslim-and-a-christian-debate-6.pdf
    • http://www.gorillawalker.com/by-jack-t-marchewka-information-technology-project-management-third-3rd.pdf
    • http://www.gorillawalker.com/charlie-chan-carries-on-a-charlie-chan-mystery-charlie-chan.pdf
    • http://www.gorillawalker.com/frenchmans-cap-story-of-a-mountain.pdf
    • http://www.gorillawalker.com/my-blue-busy-book.pdf
    • http://www.gorillawalker.com/an-introduction-to-abstract-mathematics.pdf
    • http://www.gorillawalker.com/the-magic-horse-of-han-gan.pdf
    • http://www.gorillawalker.com/liner-fifty-years-of-passenger-ship-photographs.pdf
    • http://www.gorillawalker.com/the-oxford-companion-to-wine-3rd-edition.pdf
    • http://www.gorillawalker.com/meat-cook-s-kitchen-reference.pdf
    • http://www.gorillawalker.com/a-reference-grammar-of-modern-standard-arabic-reference-grammars.pdf
    • http://www.gorillawalker.com/glbtq-the-survival-guide-for-queer-and-questioning-teens.pdf
    • http://www.gorillawalker.com/teton-sioux-music-and-culture.pdf
    • http://www.gorillawalker.com/pythagoras-secret-code-see-and-hear-how-number-shape-and.pdf
    • http://www.gorillawalker.com/aerodynamic-theory-a-general-review-of-progress-vol-v-divisions.pdf
    • http://www.gorillawalker.com/mind-trek-exploring-consciousness-time-and-space-through-remote-viewing.pdf
    • http://www.gorillawalker.com/andante-e-rondo-ongarese-op-35-version-for-bassoon-and.pdf
    • http://www.gorillawalker.com/requiem-a-tale-of-exile-and-return.pdf
    • http://www.gorillawalker.com/dark-moods-paperback.pdf
    • http://www.gorillawalker.com/approximation-procedures-in-nonlinear-oscillation-theory-contributions-to-the-sociology.pdf
    • http://www.gorillawalker.com/unmasked-volume-1.pdf
    • http://www.gorillawalker.com/the-aids-fact-book.pdf
    • http://www.gorillawalker.com/visitors-oberon-modern-plays.pdf
    • http://www.gori
    • 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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