Malicious PDF — malware analysis report

Static analysis result for SHA-256 212d6b9149fae6f5…

MALICIOUS

PDF

83.6 KB Created: 2021-04-27 14:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 24937bb2cc856ff2717e76ef4d4fe646 SHA-1: 3cb69eb1bd357fa94d161b4883370a26084b08de SHA-256: 212d6b9149fae6f53766f69b565034bc214f7166d1baa69a271508ce74a474d3
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs pointing to various domains, suggesting a link farm or redirection mechanism. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links, which is common in phishing and malware distribution campaigns. The presence of external URIs further supports the attack pattern of directing users to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6672

Heuristics 4

  • 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 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/strik?utm_term=cummins+isx+service+schedule PDF link annotation
    • http://damita.fun/survival_of_the_fittest_mtg_legality2x1n8.pdfIn PDF document text
    • http://trackengine.host/best_self_propelled_lawn_mower_2020_australia1qhi5.pdfIn PDF document text
    • http://cosmosqrab.online/contrato_de_arrendamiento_vivienda_word_mexico7l079.pdfIn PDF document text
    • http://winoraama.fun/51668413137bvtav.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/lhaJEl3/micro_battles_3_4pda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454182/normal_60274311c8de5.pdfIn PDF document text
    • http://alisabor.design/clothes_activity_worksheetk3ntw.pdfIn PDF document text
    • http://lusolakidareve.mywebcommunity.org/25941804256.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498882/normal_5fe1be192ae35.pdfIn PDF document text
    • https://cdn.sqhk.co/kobedobofepo/fgiiceu/cairo_club_orlando.pdfIn PDF document text
    • http://balegetiwep.mywebcommunity.org/993934906.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408993/normal_604cf2753523a.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/0ia8Njf/satuvapupajepuzarunuk.pdfIn PDF document text
    • http://teachost.com/dowujuffocop.pdfIn PDF document text
    • https://cdn.sqhk.co/vabedesi/iMiMajW/janipinan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000112c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C8 4812 bytes
SHA-256: 36eea3e97848ce56c0d21873b12aaf52309aa38eaa156bea914b8aa8acc3d953
font_01_sfnt_off000122ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122EA 10976 bytes
SHA-256: d8dc5c5c08109998c618a2576dc4c9802788ae9fe409b5fa94dad510658e637a