Malicious PDF — malware analysis report

Static analysis result for SHA-256 425c505b64be4fe1…

MALICIOUS

PDF

131.5 KB Created: 2020-10-23 07:04:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 0819e3b564b60c0ff22d22869846b3ba SHA-1: f3e51e1f9a79d5998f26c74f7cf514a4d0961579 SHA-256: 425c505b64be4fe15ff02385e66d1f9e7ace435e4cc96dedf206cbab684317b5
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://cctraff.ru/strik?keyword=eso+summerset+patch+notes In PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/a9d002d7a7f.pdfIn PDF document text
    • https://fipuvulozubonoj.weebly.com/uploads/1/3/4/3/134313175/gemazavomikoka.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/tanugi.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/1441719.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/5003d5cbc57e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_5f8e66824c586.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383922/normal_5f92399497ddf.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/felasorarabipis/eikon_basilike.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/dabudafuxipinezemefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdcac39f-3222-497d-837f-09e8c5f4d765/96604068510.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53a11c82-c937-4280-a9c4-b732a2b6a7a5/17866716835.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09a15b2d-8a39-4dca-87b5-4786b1837949/4175203125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2272eef0-5304-4ea7-b360-25f998a59a1c/42431209591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7842c47d-99e2-4172-ba89-1b5455f350ae/biologia_celular_y_molecular_libro_de_robertis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54ded78b-bc21-498d-b64e-2750bb4929e5/jogevofowas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7eeea4b-37ab-497a-8ea4-ebdf8f4be952/human_sciences_tok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4350a2c3-06d2-45d6-be72-779b658fc035/davuwugezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8309/3910/files/rinademedapagiwanofol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8051/4726/files/lirik_sholawat_nariyah.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_off0001c73a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C73A 5096 bytes
SHA-256: 71222dff4bba7b14d2e4bfaa4bf15f89121c43838364948d571b360d2ddacc85
font_01_sfnt_off0001d86a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D86A 11556 bytes
SHA-256: 50bd7b297bbef83a00fa4b26bc730f0fc285a634fabbf5400dc3997f8900add6

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