Malicious PDF — malware analysis report

Static analysis result for SHA-256 191cee23efdd4cb0…

MALICIOUS

PDF

59.7 KB Created: 2020-10-08 16:05:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: b866c8fcf8b61168ca23ad1ddcb5666b SHA-1: 1e32cc2746459278963d958d177ecc27f9b3cc8f SHA-256: 191cee23efdd4cb056b44ade90cb99b01b420fcfe17777742c1717fba5b2d5b4
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=motherless+go+ahead In PDF document text
    • https://site-1039675.mozfiles.com/files/1039675/xifakurefiti.pdfIn PDF document text
    • https://site-1038874.mozfiles.com/files/1038874/12937053975.pdfIn PDF document text
    • https://site-1036918.mozfiles.com/files/1036918/45812952071.pdfIn PDF document text
    • https://site-1040881.mozfiles.com/files/1040881/38638388258.pdfIn PDF document text
    • https://site-1039361.mozfiles.com/files/1039361/vuvejuduk.pdfIn PDF document text
    • https://site-1037085.mozfiles.com/files/1037085/lujesavajikalex.pdfIn PDF document text
    • https://site-1040434.mozfiles.com/files/1040434/73933947571.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/5aa51dc3-f03c-49f7-901a-4da30a9aba5c/85280210947.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04143ae3-6d4b-412a-b303-174875dc8f76/todiwinufibuxenewuraxatud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d900064-7389-452e-899b-7148a55824e3/51455463835.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9e760cf-03f5-49b7-bb3f-2b283659dcfa/54299226981.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81dd5771-cdda-4445-a18e-ea0652e861cb/1529526095.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_off0000ad92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD92 5092 bytes
SHA-256: 35a0a224fb61c998e1f3426c1b8ddf73cd30940c7779462915a817758db96607
font_01_sfnt_off0000bedf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEDF 10536 bytes
SHA-256: bc9ee7e6ee0caf95712356cbded6bdab01c424ac2d0cf6f6d2c440a94fda2132