Malicious PDF — malware analysis report

Static analysis result for SHA-256 42500aa6b3c1e8e1…

MALICIOUS

PDF

33.2 KB Created: 2020-11-01 09:56:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 6358eca581fc8fd2068a01d618504d89 SHA-1: d02a00e63f7cea1351febb60a6d76e49a2821845 SHA-256: 42500aa6b3c1e8e1119882b9e751ecd10d48622a15a6d02587cb87d71f3525e0
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://gettraff.ru/wb?keyword=ap%20biology%20reading%20guide%20answers In PDF document text
    • https://koxarakofawel.weebly.com/uploads/1/3/4/3/134310925/507d3c2db303a79.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/4041939.pdfIn PDF document text
    • https://bemogipe.weebly.com/uploads/1/3/4/3/134379528/ee05c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370543/normal_5f8b0baeadfb0.pdfIn PDF document text
    • https://saxepuxuk.weebly.com/uploads/1/3/4/4/134472003/tobom.pdfIn PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/966a9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367944/normal_5f8ab551933d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411500/normal_5f9e5c12d3079.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/bff46f2b-9aab-4321-8153-52f1cee197e3/essential_oils_uses_and_benefits_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/problemas_psicologicos_en_nios.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/ketavezajafuvuxorufukat.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/under_cabinet_knife_storage_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/dosotukibus.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_off000042f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42F7 5452 bytes
SHA-256: 8d3780e6b34b45aada729a23668950e84dd43d2f8403f585d6e77ae147f32bfe
font_01_sfnt_off00005599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5599 10064 bytes
SHA-256: 395bfeed46924f517a9e5d9a7a9b7388c6f3250df835633aca3458d8edc08588