Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ab94c699d9fd60…

MALICIOUS

PDF

36.0 KB Created: 2020-10-02 22:52:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 18d6b3202dcc77611c83f738df79656b SHA-1: f6eed82ef38194dfe8f1acaf9e72aeea0925fcfd SHA-256: c7ab94c699d9fd60fcfbfea0fe9dbd43cf02cbd19c4dd01f6a46dc116e493d4e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://cctraff.ru/strik?keyword=guia+de+aceites+esenciales+wanda+sellar+pdf In PDF document text
    • http://xazidelug.preppantherplace.com/uploads/1/3/2/3/132302868/1542293.pdfIn PDF document text
    • http://files.normandyswim.org/uploads/1/3/1/4/131406893/0b495d91b.pdfIn PDF document text
    • http://files.howtofindworknow.org/uploads/1/3/1/4/131452953/1614ae9ae4d.pdfIn PDF document text
    • http://files.crossfitantrim.com/uploads/1/3/1/8/131871705/xakegutefabaro_niviwonem.pdfIn PDF document text
    • http://files.sawelsh.com/uploads/1/3/1/0/131071043/tabopurusas.pdfIn PDF document text
    • http://fedamu.spaceliftinteriordesign.com/uploads/1/3/0/8/130814576/ca3938115225e.pdfIn PDF document text
    • http://kaduka.globalcompassionday.com/uploads/1/3/0/8/130813612/e02a6d8cd305468.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/64dc7489-8da0-425c-8013-746035bc2d76/16397596922.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38150127-2e30-450d-8ccc-436a9018b63d/rurebanidofi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e6ad886-928f-42d7-9825-d6c0c7080655/4216074200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82047267-5d16-4c11-b2c9-a0972e0ab199/57869876625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4023/3880/files/60735139282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8964/9054/files/11613889078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/6525/6357/files/family_guy_lois_brother_episode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2915/0368/files/detuwusuromesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6553/1806/files/22157213572.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BDA 5272 bytes
SHA-256: 87a16426bfa180d689f78dc78d70f6e459aec2d5a7a8f96b7593b0d7fa05f082
font_01_sfnt_off00005df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF2 10692 bytes
SHA-256: 37ada54b708477cf4d57965135f41d6546c844b9549a3d2f4e3c2f7be4c77400

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