Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed6c5beac3cbc053…

MALICIOUS

PDF

66.8 KB Created: 2021-03-03 01:52:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f2815cacbd343e18a5d233dedb6ebed2 SHA-1: 78ae4039decbd5c66f9ba95ad85456a59545e585 SHA-256: ed6c5beac3cbc05389b72fe1f7cbfeecf10c0219ef7929dc4c99b6b0c46ea735
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file flagged by ClamAV as a phishing trojan and by an ML classifier. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing campaign. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a high number of links on disposable hosting, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9514

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/award?keyword=difference+between+margin+of+safety+and+factor+of+safety PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463308/normal_602a293565962.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/fabaguxezu.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/gOhhadC/1559326742.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/matos.pdfIn PDF document text
    • https://cdn.sqhk.co/poniroxam/mfgiTic/65064746758.pdfIn PDF document text
    • https://cdn.sqhk.co/wenegifuteg/4ighehd/3238481081.pdfIn PDF document text
    • https://cdn.sqhk.co/jonimaze/iakhtij/best_classical_music_for_baby_sleep.pdfIn PDF document text
    • http://kesofater.rf.gd/30603047239.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/whatsapp_plus_apk_ultima_version_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/logaronedudeze.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/archer_c1200_manual.pdfIn PDF document text
    • http://rowoniwetob.atwebpages.com/bojizofepexu.pdfIn PDF document text
    • http://xenemusexo.epizy.com/soulseek_music_for_windows_7.pdfIn PDF document text
    • http://mesuwepuru.epizy.com/intestinal_obstruction_in_child.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/adj_ka_full_form.pdfIn PDF document text