Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af7f4609d6cf3a3…

MALICIOUS

PDF

72.1 KB Created: 2020-12-25 11:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 49f60e261b566dffb974c64e0f8a8513 SHA-1: 7767bdb092817ee3f3971cf2fb1553e3516d941a SHA-256: 4af7f4609d6cf3a3b7dab3eb0d7b57d13f008b0a482d21157dca612ee8b9517f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/wb?keyword=best%20draw%20climber%20newborn PDF link annotation
    • https://cdn.sqhk.co/xulawajikigi/gdwKhYX/linear_equations_practice_worksheet.pdfIn PDF document text
    • https://xuxozuxar.weebly.com/uploads/1/3/5/3/135326767/wurudunu.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisuvov/sjdpFnD/vorolazuropomiripusu.pdfIn PDF document text
    • https://cdn.sqhk.co/nupegefozub/igie4ab/vonojekuviv.pdfIn PDF document text
    • https://gosawopidelogeb.weebly.com/uploads/1/3/4/7/134714887/melokalume.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467287/normal_5fd640f6e4ecb.pdfIn PDF document text
    • https://cdn.sqhk.co/peluxisomex/lidjdjd/rixobimuxuvikitujovusivov.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/abbdaebd8f2f4.pdfIn PDF document text
    • https://cdn.sqhk.co/leburogutu/hbhjpjh/luwosoragunam.pdfIn PDF document text
    • https://cdn.sqhk.co/wewuxujudu/igjjVgc/rosavi.pdfIn PDF document text
    • https://sumulepali.weebly.com/uploads/1/3/4/8/134882140/fozijelekel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/datarofapakil/squidward_looking_out_window_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/41040745875.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca49904e-250e-4f8e-9636-bc7b449f70a8/summit_intermediate_etiwanda.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d12d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12D 5152 bytes
SHA-256: 2267aa3f669b22dadd1ee384b6f235ee7174f77dc426144372602846404c8eaa
font_01_sfnt_off0000e29d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29D 10264 bytes
SHA-256: 6f02b42ac16a69f618b50e5bfd24356534e63c1fe2f12ca9ccce45b69c806c46
font_02_sfnt_off000105a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A7 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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