Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6effb616a877c82…

MALICIOUS

PDF

34.7 KB Created: 2020-10-08 02:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-17
MD5: 0bf5e0af3b0e0e26c842ae15cd7f2903 SHA-1: 01a1e1a95d45fe3aed90ce5e0287a021cb785cbd SHA-256: b6effb616a877c827f4198aaa5676675df46103b1287afd529bc7f30a8516d0b
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://gettraff.ru/strik?keyword=neuroscience+exploring+the+brain+4th+edition In PDF document text
    • http://zepologup.wrighthanz.net/uploads/1/3/2/6/132683071/904223.pdfIn PDF document text
    • http://befikofuk.themkfw.com/uploads/1/3/2/8/132815213/1683232.pdfIn PDF document text
    • http://files.dixielandbandorlando.com/uploads/1/3/0/9/130970012/garosejomagit-dovuduwibaf-jomevow.pdfIn PDF document text
    • http://files.customartsstudio.com/uploads/1/3/0/9/130969204/xezifonor.pdfIn PDF document text
    • http://jipunedex.auntluluskitchen.com/uploads/1/3/2/3/132303052/9160f1.pdfIn PDF document text
    • http://files.buymyoldvehicle-peterborough.co.uk/uploads/1/3/2/3/132303219/922248.pdfIn PDF document text
    • http://files.robertzant.co/uploads/1/3/1/6/131607331/samekanisegesiti.pdfIn PDF document text
    • http://bijuwil.staites-honey.com/uploads/1/3/1/0/131070487/e714a8b7.pdfIn PDF document text
    • http://zazaba.gpocnebraska.com/uploads/1/3/1/8/131856725/c913406780aa.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004960.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004960.bin)
    • https://uploads.strikinglycdn.com/files/fbcb1f1f-9972-473d-81bc-135e5e6e310d/gagisepikutodasiwef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1816ac4-4c35-4b4e-98f0-6e4dcc356b94/18401154122.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32555968-3935-4b39-ab75-2583919af833/55977624861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2400dab1-cb90-4e6e-aebc-963b32593cbc/2848469417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa660577-7e93-44c1-9ea0-2536c7d53832/69896450572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c1b4ec8-0c9c-419d-80e9-ce0a02176336/49131906913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36964473-eed4-4885-8faf-fd0608d9cc02/zitimotonivuroket.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 extracted file (font_00_sfnt_off00004960.bin)

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_off00004960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4960 5600 bytes
SHA-256: 6a5d490590060919f4667d989f1c45d6fc14ae4923b9c7f159d76b9581c59e71
font_01_sfnt_off00005c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C74 9800 bytes
SHA-256: e4040460b1388a56c06cfe233f57951c654740f5e19e75f40460cc61051fec97

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