Malicious PDF — malware analysis report

Static analysis result for SHA-256 8664755e873ddca0…

MALICIOUS

PDF

35.6 KB Created: 2020-10-08 20:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2043ee40b15a87811bda703663538b89 SHA-1: 1b1d02896c5c053834a0e8ea09b2d76478b660a7 SHA-256: 8664755e873ddca0be35be8d6ada84afb9bb45d3ed698f89ed8c49c1dfef3fcd
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://ggtraff.ru/strik?keyword=pw+atkins+physical+chemistry+pdf+download In PDF document text
    • https://site-1036699.mozfiles.com/files/1036699/89897575435.pdfIn PDF document text
    • https://site-1040352.mozfiles.com/files/1040352/sutolupavitanuratosod.pdfIn PDF document text
    • https://site-1042545.mozfiles.com/files/1042545/bunenevezin.pdfIn PDF document text
    • http://files.lunchtimerecitals.org/uploads/1/3/1/1/131164387/lurubowenot-japoxuliwemune-rofuvepewanob.pdfIn PDF document text
    • http://files.papershadestudio.com/uploads/1/3/2/6/132682335/dulomeda-laduxononiralum-lanose.pdfIn PDF document text
    • http://lujojowad.tangiandjess.com/uploads/1/3/1/4/131437261/2063633.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a78868-2116-4df4-ba2f-b7a06b9e470d/14940571358.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b714924f-13f6-4825-9c8c-51dc915ffb57/7895472986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98acd3f4-9ab6-4977-823c-c9caea70b6e1/79879517073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5009/8078/files/duzemuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2307/5998/files/vowebanozun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7986/8320/files/kipevoribedawedon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/tisubugez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5575/7977/files/61128442981.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/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48BD 5652 bytes
SHA-256: 61968aeed3d7893ea378cd8c4dc8247a59d582f625c2cbfffd13bcd12e039c9f
font_01_sfnt_off00005be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE9 11668 bytes
SHA-256: 2be4adb5afdb52e3979627dec83c829f5e86cb9efcf9027fe453cf4d0c7388f6

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