Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f517348e2357f4…

MALICIOUS

PDF

38.1 KB Created: 2020-09-30 11:34:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-18
MD5: c88c60ef21f028b35779310ed2864b92 SHA-1: 3b30335ad899db97c3bb0661c50bc8e76161ad2d SHA-256: 26f517348e2357f489deade09dd54a4c4c0cc660d6cfb9e276867e38bbfa32c7
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=academic+journal+guide+2015+pdf In PDF document text
    • https://site-1036684.mozfiles.com/files/1036684/68327803120.pdfIn PDF document text
    • https://site-1036685.mozfiles.com/files/1036685/gowusafibebalani.pdfIn PDF document text
    • https://site-1037214.mozfiles.com/files/1037214/jemililurowotosafimeroti.pdfIn PDF document text
    • https://site-1037205.mozfiles.com/files/1037205/43666062833.pdfIn PDF document text
    • https://site-1037106.mozfiles.com/files/1037106/memujedakas.pdfIn PDF document text
    • http://vogawun.thefuzzymole.com/uploads/1/3/1/6/131637814/dulifutigo.pdfIn PDF document text
    • http://vusesubi.ps177.com/uploads/1/3/2/3/132302978/8559176.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005753.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005753.bin)
    • https://uploads.strikinglycdn.com/files/66b3a969-e0e3-4b11-92b5-f1c5ab649d95/tigefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5a18fc1-8128-4af7-9577-143de3f7abee/xeluruzimuluxitawazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00a0b137-2608-497c-9a1c-c3eb3ee37ad2/losaxofinejifenotuributi.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_off00005753.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5753 5812 bytes
SHA-256: a55cdc05df340cee34ff269b37f8ca890e2716a0df092067e0d4d469d89a9ee4
font_01_sfnt_off00006b17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B17 9740 bytes
SHA-256: 3fd7311410778638f8cbb3a2c3e33bf90be31dcafc2439109397ec9e8b67e058