Malicious PDF — malware analysis report

Static analysis result for SHA-256 793c51180596173e…

MALICIOUS

PDF

35.4 KB Created: 2020-11-05 06:55:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-14
MD5: fbc492d3679918805c62b1e774bd1721 SHA-1: 008b203f4b7fa992e60fb30cfda874af74396e78 SHA-256: 793c51180596173e9b2aede423f2affccfc823c5a709dc8410c6cf11a44a1050
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=unit+conversions+gizmo+answer+key+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404753/normal_5f9dceec9d923.pdfIn PDF document text
    • https://kumevilowe.weebly.com/uploads/1/3/4/5/134598600/bebinelotazuzerozenu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f8fdd572d794.pdfIn PDF document text
    • https://muxoramosuzuveg.weebly.com/uploads/1/3/4/2/134266249/2654887.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/e4985a4.pdfIn PDF document text
    • https://lujisitezolip.weebly.com/uploads/1/3/4/1/134109273/4254472.pdfIn PDF document text
    • https://lalonofinesuver.weebly.com/uploads/1/3/4/4/134442061/37e224ad.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/8a6898.pdfIn PDF document text
    • https://wopeduvolevim.weebly.com/uploads/1/3/0/7/130776212/xalutos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lixuzo/potawatomi_park_district_st_charles_il.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69ed3e36-de9e-4d85-a3da-acc8f0708105/radium_girl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d6e6a8a-08b6-4001-89e3-5e50b36fdc50/suma_o_diferencia_de_dos_potencias_i.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a78555c3-3230-429b-a5da-1132ead230d2/las_batallas_del_desierto_resumen_po.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_off00004ac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC7 5804 bytes
SHA-256: 275178e011f0694fdbe29ee3006cfc16408de8083631e9b1f7aca71f984c91a5
font_01_sfnt_off00005ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA1 9856 bytes
SHA-256: 022a3ff5f4762a379eca73689708147ca57a09d1792b1b1d9fa40da2aae67284