Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2684eed050a1a9c…

MALICIOUS

PDF

34.1 KB Created: 2020-02-19 11:23:46 +03:00 Authoring application: Adobe Acrobat 6.02 (via Adobe Acrobat 6.0) First seen: 2021-06-28
MD5: 893337aaa5e9bbe2db2690d59cf1c110 SHA-1: abb12dd2cfdc8aa1946879b801f24a65614985cf SHA-256: e2684eed050a1a9c1a0dd77f60df4d7dda158b74147f768531d685d087c8da6e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on the 'gorillawalker.com' domain. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document as malicious. No scripts were extracted, and the document body was unreadable, suggesting the primary malicious function is the link farm itself.

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/piano-magic-duets-bk-1-graded-duets-for-the-young.pdf In PDF document text
    • http://www.gorillawalker.com/traumziele-von-mexiko-bis-panama-german-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/method-songwriting.pdfIn PDF document text
    • http://www.gorillawalker.com/squirting-lesbians-make-me-squirt.pdfIn PDF document text
    • http://www.gorillawalker.com/geospatial-technique-in-database-design-for-land-resource-planning-gis.pdfIn PDF document text
    • http://www.gorillawalker.com/analysing-the-french-revolution-3ed-edition-app-digital.pdfIn PDF document text
    • http://www.gorillawalker.com/the-intuitive-trader-developing-your-inner-trading-wisdom.pdfIn PDF document text
    • http://www.gorillawalker.com/before-dawn.pdfIn PDF document text
    • http://www.gorillawalker.com/bridge-engineering-third-edition-kindle-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/burkina-faso-business-intelligence-report.pdfIn PDF document text
    • http://www.gorillawalker.com/hormesis-a-revolution-in-biology-toxicology-and-medicine.pdfIn PDF document text
    • http://www.gorillawalker.com/old-fashioned-nautical-illustrations-dover-electronic-clip-art-cd-rom.pdfIn PDF document text
    • http://www.gorillawalker.com/to-teach-to-heal-to-serve-the-story-of-the.pdfIn PDF document text
    • http://www.gorillawalker.com/government-and-politics-in-colonial-america-primary-sources-of-everyday.pdfIn PDF document text
    • http://www.gorillawalker.com/arequipa-travel-guide-insider-advice-from-an-expat-in-peru.pdfIn PDF document text
    • http://www.gorillawalker.com/friends-and-apostles-the-correspondence-of-rupert-brooke-and-james.pdfIn PDF document text
    • http://www.gorillawalker.com/a-matter-of-class.pdfIn PDF document text
    • http://www.gorillawalker.com/the-killer-vol-2.pdfIn PDF document text
    • http://www.gorillawalker.com/auto-choice-bill-may-not-drive-down-costs-actuaries-say.pdfIn PDF document text
    • http://www.gorillawalker.com/biochemistry-the-molecular-basis-of-life.pdfIn PDF document text
    • http://www.gorillawalker.com/fundamentals-of-product-liability-law-for-engineers.pdfIn PDF document text
    • http://www.gorillawalker.com/yes-the-prayer-god-loves-to-answer.pdfIn PDF document text
    • http://www.gorillawalker.com/praxis-ii-marketing-education-5561-exam-flashcard-study-system-praxis.pdfIn PDF document text
    • http://www.gorillawalker.com/anna-karenina-best-translation-explanatory-notes-perfect-navigation-illustrated-best.pdfIn PDF document text
    • http://www.gorillawalker.com/it-looked-different-on-the-model-epic-tales-of-impending.pdfIn PDF document text
    • http://www.gorillawalker.com/national-geographic-july-1961-supplement-atlas-map-of-the-united.pdfIn PDF document text
    • http://www.gorillawalker.com/a-simple-guide-to-roundworms-treatment-and-related-diseases-a.pdfIn PDF document text
    • http://www.gorillawalker.com/treating-depression-with-hypnosis-integrating-cognitive-behavioral-and-strategic-approaches.pdfIn PDF document text
    • http://www.gorillawalker.com/shrimp-blastoff-readers-oceans-alive.pdfIn PDF document text
    • http://www.gorillawalker.com/u-s-army-weapons-systems-2014-2015.pdfIn PDF document text
    • http://www.gorillawalker.com/interpreting-the-present.pdfIn PDF document text
    • http://www.gorillawalker.com/boundaries-101-learning-to-recognize-honor-communicate-your-personal-limits.pdfIn PDF document text
    • http://www.gorillawalker.com/achieving-stability-balance-in-the-draft-constitutional-treaty-a-more.pdfIn PDF document text
    • http://www.gorillawalker.com/the-best-of-bach-e-z-play-today-volume-167.pdfIn PDF document text
    • http://www.gorillawalker.com/mediterranean-crossings-the-politics-of-an-interrupted-modernity.pdfIn PDF document text
    • http://www.gorillawalker.com/the-cure-for-dreaming.pdfIn PDF document text
    • http://www.gorillawalker.com/media-law-in-belgium.pdfIn PDF document text
    • http://www.gorillawalker.com/sweet-and-sour-tales-from-china.pdfIn PDF document text
    • http://www.gorillawalker.com/why-the-hell.pdfIn PDF document text
    • http://www.gorillawalker.com/cocinas-mexicanas-calendar.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off00000d52.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD52 16139 bytes
SHA-256: 5a2edef3fb0da431eb81055ef8254a35e2618dfcc102ab696697a9e59cc0f6d5

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