Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d331dcad5bf7f78…

MALICIOUS

PDF

42.5 KB Created: 2020-10-14 05:33:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-14
MD5: ecd1606123655fff77d79b76b82abf1e SHA-1: c8baff5f4dded26d867f28e885f183cd469679e4 SHA-256: 0d331dcad5bf7f78ca9aa515dbfbc1d8d23998b336e8f27d6b5467bf5f292214
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=mountain+night+sky+wallpaper+for+android In PDF document text
    • https://site-1040398.mozfiles.com/files/1040398/vegof.pdfIn PDF document text
    • https://site-1043403.mozfiles.com/files/1043403/97723543679.pdfIn PDF document text
    • https://site-1039307.mozfiles.com/files/1039307/28982107603.pdfIn PDF document text
    • https://site-1042976.mozfiles.com/files/1042976/31510747077.pdfIn PDF document text
    • https://site-1039156.mozfiles.com/files/1039156/vugosot.pdfIn PDF document text
    • https://site-1036840.mozfiles.com/files/1036840/76673711637.pdfIn PDF document text
    • https://site-1043520.mozfiles.com/files/1043520/87010265364.pdfIn PDF document text
    • https://site-1036917.mozfiles.com/files/1036917/mivowulinuboruzesotaloro.pdfIn PDF document text
    • https://site-1042622.mozfiles.com/files/1042622/12318342203.pdfIn PDF document text
    • https://site-1036823.mozfiles.com/files/1036823/36189223275.pdfIn PDF document text
    • https://site-1036716.mozfiles.com/files/1036716/70262920190.pdfIn PDF document text
    • https://site-1038756.mozfiles.com/files/1038756/45703214042.pdfIn PDF document text
    • https://site-1037071.mozfiles.com/files/1037071/20030886586.pdfIn PDF document text
    • https://site-1037858.mozfiles.com/files/1037858/71279677354.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/221f59e6-15bc-4875-8cf9-abc8ab8e79b9/kukofoxebupagidiworuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a30fcfdd-d29e-486d-bea9-275438f378d4/tokazozixaxetavig.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_off000067d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D5 5568 bytes
SHA-256: 5d88d536e5fe41013b5d7f05e361114aa0f2e95e76caf2ac8c7b58e78b542b9e
font_01_sfnt_off00007ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE2 10092 bytes
SHA-256: 6481ba43fb39b00453ab98e6036a5b723f1017ee1751dc45199cad0f103a5c30

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