Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3b5fc444e517cd…

MALICIOUS

PDF

45.2 KB Created: 2020-10-30 15:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: aba7d3e0e2be83925f52d42bba8bec71 SHA-1: f227a8d43d20f2656251f30fb50970b4c8c043a5 SHA-256: 4e3b5fc444e517cd74bdd404432a958827338d5a23d7626be56dae20d3a2878c
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/wb?keyword=essay%20on%20education%20system%20in%20pakistan%20pdf In PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/3780305.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/5867f967669b63b.pdfIn PDF document text
    • https://fipaziditude.weebly.com/uploads/1/3/4/4/134465794/wegoginowiduv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422368/normal_5f985bfe05470.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_5f89507787b5d.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/buposunonugilik-gupunonesawe-rugugukovedebo.pdfIn PDF document text
    • https://nigokozop.weebly.com/uploads/1/3/4/4/134436215/filiw.pdfIn PDF document text
    • https://wudizibi.weebly.com/uploads/1/3/4/4/134477582/9cb35c769a4e0.pdfIn PDF document text
    • https://xenolonaloku.weebly.com/uploads/1/3/4/4/134458783/5755434.pdfIn PDF document text
    • https://wodedofa.weebly.com/uploads/1/3/4/3/134320626/b0933e22.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://cdn.shopify.com/s/files/1/0501/7488/6043/files/human_footprint_video_questions_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7941/0862/files/punctuation_worksheets_for_class_2_cbse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bca413dd-8f7a-4dc6-8764-495b4725c677/duxusaxasiwenabovas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/422070af-fea7-4bfe-b5b9-8d3179cefcb0/fichas_divisiones_de_dos_cifras.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba8f50a9-add7-4beb-b810-596f443e06b5/monotowazudezibamenedeza.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_off0000643f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643F 5180 bytes
SHA-256: 1b9e94e1eb945cb89c350dd6b27a4db11c68b426fdd4657da7df4a3a4caf4e3f
font_01_sfnt_off000075d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D2 10440 bytes
SHA-256: dc51e19082681b719c001091cc2e8e48fb54795456cf81b127875f9caa2a818d
font_02_sfnt_off00009930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9930 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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