Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05b9b0e2de95abb…

MALICIOUS

PDF

74.7 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: 7b097492e4a81842217b3d3a0688646a SHA-1: 3d8c5b958700733c10f4ee07497166985f0b3023 SHA-256: b05b9b0e2de95abb8f3893511cd8f95b2510462b46e31a04f2c9ce6b37ab349f
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One of the primary URLs, 'https://vilenefex.ru/award?keyword=amazon+kindle+convert+pdf+via+email', indicates a potential lure related to Amazon Kindle and PDF conversion, possibly a phishing attempt. No scripts were extracted, but the PDF structure itself facilitates the redirection to malicious or SEO-abusive sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9133

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
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6D 5284 bytes
SHA-256: 297d84ad5433636d2bce3e7a23adb85cc9035c47fed6f028914c35f39a2367e2

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