Malicious PDF — malware analysis report

Static analysis result for SHA-256 941f04a4bab03c26…

MALICIOUS

PDF

44.3 KB Created: 2020-10-03 01:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: e49be248273a907822883f692e6e0c63 SHA-1: c25a669423af061f993b58b4f4cee21877ef5d0a SHA-256: 941f04a4bab03c26efbac144936c604e6054f4423e325570887612e16019eed0
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://gettraff.ru/strik?keyword=connectives+list+pdf In PDF document text
    • https://site-1037245.mozfiles.com/files/1037245/pojel.pdfIn PDF document text
    • https://site-1037073.mozfiles.com/files/1037073/42526077475.pdfIn PDF document text
    • https://site-1039669.mozfiles.com/files/1039669/juvejixodajosit.pdfIn PDF document text
    • https://site-1037120.mozfiles.com/files/1037120/47403054990.pdfIn PDF document text
    • https://site-1037266.mozfiles.com/files/1037266/33036276446.pdfIn PDF document text
    • https://site-1039906.mozfiles.com/files/1039906/duworikewuzomojogate.pdfIn PDF document text
    • https://site-1039290.mozfiles.com/files/1039290/bidorukowuwiputi.pdfIn PDF document text
    • https://site-1037003.mozfiles.com/files/1037003/71955509636.pdfIn PDF document text
    • https://site-1037088.mozfiles.com/files/1037088/panuwuridaxakizolupufaduj.pdfIn PDF document text
    • https://site-1037069.mozfiles.com/files/1037069/wajaromawotirivosu.pdfIn PDF document text
    • https://site-1036980.mozfiles.com/files/1036980/58014786919.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/0334d20e-9da2-416f-8643-99e570b865cf/zawuxulebiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ee8d9c2-276f-495b-a73b-f5bc59761485/38733480696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f9e9bf7-93ac-4b04-afcd-da31454621de/75315287937.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_off0000634f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634F 4808 bytes
SHA-256: 0822a6f453957488e41950e343ebd68461c7c1117211f5112fe728678672f1dd
font_01_sfnt_off000073cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CC 15116 bytes
SHA-256: 52517be3b8267ad1f88d95503bf0397c85495c51efd82770a4e5d4d7d5b1573c

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