Malicious PDF — malware analysis report

Static analysis result for SHA-256 445a245e83540571…

MALICIOUS

PDF

50.5 KB Created: 2020-10-05 22:13:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-11
MD5: 3d352835698b9b9ab5fb37442cdbfe73 SHA-1: 9da867cb42a12ab3f6f0c77a3af4a1201ee16d19 SHA-256: 445a245e83540571ea155fe21105bfd94b07545a6c512cb40a26da8349eeabba
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://cctraff.ru/strik?keyword=icelandic+volcano+case+study+answers In PDF document text
    • https://site-1036719.mozfiles.com/files/1036719/zujetuke.pdfIn PDF document text
    • https://site-1036719.mozfiles.com/files/1036719/nifixadorokoxixapoji.pdfIn PDF document text
    • https://site-1037262.mozfiles.com/files/1037262/3976772462.pdfIn PDF document text
    • https://site-1039963.mozfiles.com/files/1039963/61719359499.pdfIn PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/tuwovebuz.pdfIn PDF document text
    • https://site-1039444.mozfiles.com/files/1039444/44237304940.pdfIn PDF document text
    • https://site-1038321.mozfiles.com/files/1038321/33849205910.pdfIn PDF document text
    • https://site-1040668.mozfiles.com/files/1040668/ninipisug.pdfIn PDF document text
    • https://site-1042275.mozfiles.com/files/1042275/labuluxum.pdfIn PDF document text
    • http://nesej.gaggiamanualservice.com/uploads/1/3/1/3/131382133/renorajotepifelalow.pdfIn PDF document text
    • http://files.homepick.us/uploads/1/3/1/4/131454816/sekesidolinolu.pdfIn PDF document text
    • http://files.buttercupbakerymb.com/uploads/1/3/2/6/132695651/pilegato-sisexokivekased-mavejen.pdfIn PDF document text
    • http://dabik.kierstinbible.com/uploads/1/3/2/8/132814930/784057.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/8a444884-dd43-4092-bc0c-4ce126a150ef/92826114225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/632d3b3e-c0b9-484d-ac85-e2ad77da6033/zelesumelavegasejopedoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9daf7c03-3494-4346-9a36-32db7aa6b123/kosarugatinegele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b9670f7-bb14-48d2-976e-b66cbf735923/sitimifakikave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9b0d4ce-4b44-4092-958e-3388122b7de2/wejobuwedibamuweduxuruje.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_off000086a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A7 5124 bytes
SHA-256: 9e66b2e27e27f9b8c281fb8a0daa4926a164720be8d6d828f86abda2b60b4b10
font_01_sfnt_off0000983b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x983B 10764 bytes
SHA-256: 8b9aaf45c428b987efec9756e5ecff075368ea393bb5d836c8aa3fcc1f0b5d60