Malicious PDF — malware analysis report

Static analysis result for SHA-256 26070b89875d3b20…

MALICIOUS

PDF

39.1 KB Created: 2021-09-29 11:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0ab37b83db74d814d427fa5713e51da7 SHA-1: a33c06919a57637ff5c575825cc453fdea0c793b SHA-256: 26070b89875d3b2021403dcd915d9d9fc4a4c97a0ab5d83100567754463b4798
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains a full-page image designed to obscure a clickable link, likely directing users to a malicious site for credential harvesting or further malware delivery. The presence of numerous external URIs on disposable hosting further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8579

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 39 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://coretry.ru/uplcv?utm_term=id+metal+door+unturned PDF link annotation
    • http://compow.net/ckfinder/userfiles/files/49679744336.pdfIn PDF document text
    • http://rileyillustration.com/images/agency/files/fojupimureliledosanagibiv.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/witapagekasew.pdfIn PDF document text
    • http://aokisuper.com/ckfinder/userfiles/files/zoxupafi.pdfIn PDF document text
    • https://blagoustroystvo24.ru/ckfinder/userfiles/files/nuxiti.pdfIn PDF document text
    • https://galerieportelouise.be/userfiles/files/libonikaxo.pdfIn PDF document text
    • http://caopump.com/admin/userfiles/file/79540647794.pdfIn PDF document text
    • https://aordonez.com/images/contenidos/files/37687586122.pdfIn PDF document text
    • http://originalavto.ru/userfiles/file/pudatorupevifaduw.pdfIn PDF document text
    • http://exms.fr/sites/default/files/file/bofilolobopefubexitamijol.pdfIn PDF document text
    • https://aydin-elektrik.com/resimler/files/30442761751.pdfIn PDF document text
    • http://ambcavallon.eu/userfiles/files/vosuwezob.pdfIn PDF document text
    • http://hugslock.com/app/webroot/img/files/bidigupog.pdfIn PDF document text
    • http://alacarte-design.de/userfiles/file/nibigorofamedi.pdfIn PDF document text
    • http://banhangcongnghe.com/upload/FCK/file/51877747738.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/eff9e66d12a35acac5606dc180bae334/22088408777.pdfIn PDF document text
    • http://vinhthuan.asia/upload/files/dewewu.pdfIn PDF document text

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