Malicious PDF — malware analysis report

Static analysis result for SHA-256 478d5d162e8db247…

MALICIOUS

PDF

40.6 KB Created: 2020-10-08 23:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 53cbb857e202b2e89e5152db4b985adb SHA-1: 471ab8eab754588883098bc55066509c50b8a1b4 SHA-256: 478d5d162e8db247993482c3998a2b599bf8b41f293034d9c4bb927ff519a1c8
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://cctraff.ru/strik?keyword=restas+llevando+para+imprimir In PDF document text
    • https://site-1041181.mozfiles.com/files/1041181/totolabejuteviliveleja.pdfIn PDF document text
    • https://site-1037054.mozfiles.com/files/1037054/xagubigipadefavimif.pdfIn PDF document text
    • https://site-1048559.mozfiles.com/files/1048559/38178320313.pdfIn PDF document text
    • https://site-1039924.mozfiles.com/files/1039924/pazinugukinilejutosixej.pdfIn PDF document text
    • https://site-1039898.mozfiles.com/files/1039898/sapokalimedamima.pdfIn PDF document text
    • https://site-1036815.mozfiles.com/files/1036815/tebuvabagavixa.pdfIn PDF document text
    • https://site-1038414.mozfiles.com/files/1038414/42751286033.pdfIn PDF document text
    • https://site-1042501.mozfiles.com/files/1042501/3503141070.pdfIn PDF document text
    • https://site-1036855.mozfiles.com/files/1036855/gexisin.pdfIn PDF document text
    • https://site-1037846.mozfiles.com/files/1037846/wikojapiwojaxuwexuzuxeke.pdfIn PDF document text
    • https://site-1036938.mozfiles.com/files/1036938/64589838891.pdfIn PDF document text
    • https://site-1044062.mozfiles.com/files/1044062/toletotedipo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00006102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6102 5172 bytes
SHA-256: c423e6d8f33b63b1d7f2e552e15361699d53a44f164a3eaf78edb3ea4f275af9
font_01_sfnt_off0000728e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x728E 10256 bytes
SHA-256: db64ab4dc5941fd378036f73ca799c926d18f3534d91eb2d6e7ad8cef911083b

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