Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5872eda4e1a934b…

MALICIOUS

PDF

64.0 KB Created: 2021-04-02 17:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9a46f2e0103a2976fdf6c282b0fa5d5a SHA-1: f2a3784c767723d21fd1c15896a5aa7b99393df6 SHA-256: c5872eda4e1a934ba3ac183c49e061b334fd7484a1f7dc5678e3bdd4aaafc0ee
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://vilenefex.ru/award?keyword=amazon+kindle+convert+pdf+via+email PDF link annotation
    • https://zesaxigupube.weebly.com/uploads/1/3/4/0/134016892/8e366b9.pdfIn PDF document text
    • https://zaketedojerobi.weebly.com/uploads/1/3/6/0/136023974/mubuxazuno-bidomegototosut-vojomamojuzu-gifosodiro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379837/normal_60551b3e11e82.pdfIn PDF document text
    • https://damatabawapu.weebly.com/uploads/1/3/1/3/131379320/6284514.pdfIn PDF document text
    • http://megidexabaror.mywebcommunity.org/91453477697.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465709/normal_5fcc541020f10.pdfIn PDF document text
    • https://zorusijumabek.weebly.com/uploads/1/3/4/8/134851431/9801114.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476925/normal_5fdf2b571932d.pdfIn PDF document text
    • http://fegivate.medianewsonline.com/dinamalar_aanmeega_malar_download.pdfIn PDF document text
    • http://sasawavivar.mygamesonline.org/effects_of_tardiness_of_students.pdfIn PDF document text
    • http://tulavesew.getenjoyment.net/descargar_biblia_de_estudio_thompson_gratis_en_espaol_apk.pdfIn PDF document text
    • http://xozowilozoga.mywebcommunity.org/favudogis.pdfIn PDF document text
    • http://xepelewatelaziv.getenjoyment.net/gukig.pdfIn PDF document text
    • https://nizifaweneli.weebly.com/uploads/1/3/4/5/134589853/9791944.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5ca5445-b477-4e06-a6fc-3a6fe3a1b759/the_entertainer_movie_robert_redford.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a9a7e05-1a5d-4965-aaf9-4e2fa8196692/92873833811.pdfIn PDF document text
    • http://rotufixijisadi.onlinewebshop.net/zijexojegozabiwusil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fbcb04a-4689-40ab-b861-6bf549915df6/48692786927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa0d65a7-c6b7-4689-bb71-0a344799443f/54368805275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8aea1d9-a740-4642-80f8-3922543e3a8b/icse_class_3_english_grammar_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36513e5f-25d4-4bc1-8beb-5a6885f5ebc1/stihl_011_avt_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bc6d020-05ac-46e6-862f-e7f2fceb555b/autocad_command_window_gone.pdfIn PDF document text
    • http://sakogabutal.onlinewebshop.net/89445649845.pdfIn PDF document text