Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f6bf1818b236a8b…

MALICIOUS

PDF

43.3 KB Created: 2020-10-01 16:19:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-30
MD5: d87fb1923636fc41a8f141a75f11cd4d SHA-1: 604bd79b5c5c41e2d666ae63ded77af4f43f55fe SHA-256: 8f6bf1818b236a8b7875ff301d75b0b67c09f91f7a3ab29b57248a61af198db5
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=social+demography+in+sociology+pdf In PDF document text
    • https://site-1036911.mozfiles.com/files/1036911/74142923906.pdfIn PDF document text
    • https://site-1036725.mozfiles.com/files/1036725/vepik.pdfIn PDF document text
    • https://site-1037241.mozfiles.com/files/1037241/22331242907.pdfIn PDF document text
    • https://site-1038349.mozfiles.com/files/1038349/famubasivobe.pdfIn PDF document text
    • https://site-1036679.mozfiles.com/files/1036679/71846119136.pdfIn PDF document text
    • https://site-1037846.mozfiles.com/files/1037846/giwegusowawajixuvopapak.pdfIn PDF document text
    • https://site-1038460.mozfiles.com/files/1038460/9335219092.pdfIn PDF document text
    • https://site-1036783.mozfiles.com/files/1036783/56295758972.pdfIn PDF document text
    • https://site-1037009.mozfiles.com/files/1037009/baduxasugelarimapex.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006879.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006879.bin)
    • https://uploads.strikinglycdn.com/files/3fb2bcf0-7b33-46fd-92cb-7b98bda76d59/wekebijigesanulerupaxut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/872307bd-da8f-457d-8619-717052671edf/wititudekesozuxorumenevak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd63f3f7-11df-40ea-9ff8-4aeed8bcada3/pamosefawokuvuravijulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4bd6e63-d21a-416f-979b-b1e794ff794b/xegozepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d5359fb-7a1a-4826-bf8d-4e18ae48bf5e/dukozabiduguwetos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da23a3c8-8553-415f-a6d2-f8d5924c807f/53888089470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e46b8337-ee13-430e-92bd-5d62b7413e89/3741427102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1231e206-b99e-4e0f-b619-2659b4b151d7/jefos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e27ac3a-f292-4d45-9ab0-a146805f62c6/7997964738.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_off00006879.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6879 5776 bytes
SHA-256: d11be0e1a3e83dea2cbd148468e6b39a0597fb6f51600c6e324c931f6038e765
font_01_sfnt_off00007c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C03 10516 bytes
SHA-256: fc2f90b06c25f0bfae67cd9d07dd3fcef4f444c487db8dc6dbd69c4270b098c8