Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f94953f01a5f29…

MALICIOUS

PDF

59.8 KB Created: 2020-10-04 00:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-08
MD5: e86907c6d3a01ccdc0d15c914fb8fb05 SHA-1: 6acc9315029ea1a08450c0e2c2bab4b33695d6f5 SHA-256: 98f94953f01a5f29f2e4752ea46d76425217004d4453a09de476b571db6dfb07
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://ggtraff.ru/strik?keyword=python+programming+guide+pdf In PDF document text
    • http://niwakuzo.rock-n-water.com/uploads/1/3/1/4/131438044/3036214.pdfIn PDF document text
    • http://files.princetonhealthandfitness.com/uploads/1/3/1/4/131455463/ed7840988fb7c.pdfIn PDF document text
    • http://rekumeto.melodydatz.com/uploads/1/3/0/7/130738623/5023385.pdfIn PDF document text
    • http://files.bandgfrenchies.com/uploads/1/3/1/4/131437978/d7499d5e.pdfIn PDF document text
    • http://files.gbcncin.org/uploads/1/3/1/1/131164023/befij-refenorog-fapitati-bidolijonazud.pdfIn PDF document text
    • http://files.crumblesbynicole.com/uploads/1/3/0/7/130740084/4720885.pdfIn PDF document text
    • https://site-1039390.mozfiles.com/files/1039390/gimijuvaxari.pdfIn PDF document text
    • https://site-1036811.mozfiles.com/files/1036811/begesudibi.pdfIn PDF document text
    • https://site-1036930.mozfiles.com/files/1036930/42649941998.pdfIn PDF document text
    • http://files.stpatricksbns.com/uploads/1/3/1/4/131437402/pepozi.pdfIn PDF document text
    • http://files.fieldhockeyfun.net/uploads/1/3/1/0/131070618/motejob_lokepem_doxes_nadirupa.pdfIn PDF document text
    • http://files.stmarymagdalenewpg.org/uploads/1/3/1/8/131856531/badifa.pdfIn PDF document text
    • http://wejob.amberharp.com/uploads/1/3/1/0/131070187/zogevegerev-rutozu-gedazivetanogel.pdfIn PDF document text
    • http://files.markheggaircraft.com/uploads/1/3/1/3/131380998/13fbc841a385.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000ab5e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000ab5e.bin)
    • 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_off0000ab5e.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ab5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB5E 5348 bytes
SHA-256: 00d1517fb70e566b340ce15714c076e8cce83618c4a2590b1c91b196e78365a0
font_01_sfnt_off0000bd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD71 10744 bytes
SHA-256: 020f03d1ea1abe6bfadbbd3ed9f1a52817ccee1770337673cb1e58ec337a5b86