Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1224c6da3a42477…

MALICIOUS

PDF

54.0 KB Created: 2021-09-10 22:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 3b7254ac1508f93f01f6b0b903f65c76 SHA-1: fded864e2573715c7c75a286b5e2d95a9a0e300a SHA-256: e1224c6da3a42477d12030982ed750ae0dc0c81f9584f8df3cd77124a367bbdd
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains numerous external URIs and is structured as a link farm on disposable hosting, indicating a phishing or scam lure. The PDF likely exploits a vulnerability or uses embedded scripts to redirect the user to malicious websites, consistent with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6253

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://crysiq.ru/uplcv?utm_term=quel+est+le+meilleur+navigateur+android PDF link annotation
    • http://bekescsaba.varosom.hu/userfiles/files/nanakegapijuz.pdfIn PDF document text
    • http://evaemlak.com/userfiles/file///94421311112.pdfIn PDF document text
    • https://llbyggodesign.se/UserFiles/files/nodawovuneserarer.pdfIn PDF document text
    • https://polnische-zaune.de/userfiles/file/ramefabo.pdfIn PDF document text
    • https://www.caissedesecolesdu5eme.fr/backoffice/ckfinder/userfiles/files/xedotif.pdfIn PDF document text
    • https://rm-parketi.si/uploads/50901475006.pdfIn PDF document text
    • https://tatvan.in/userfiles/file/ginaru.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/pm040atic8hs9feroq3gclbb57/foruwuvapopimotej.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/lazamijomuwilodi.pdfIn PDF document text
    • https://xn--pssa17sw71b.tw/upimages/files/8858471468.pdfIn PDF document text
    • https://mysmartedu.com/uploadimages/files/dezejigiwefa.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/mivomegajemikogitizi.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613451e55a4ea---69906742687.pdfIn PDF document text
    • http://csc021.com/userfiles/file/20210907170254_3wdj20.pdfIn PDF document text
    • http://catherine-massage.com/ckfinder/userfiles/files/mobumudaxuwufamot.pdfIn PDF document text
    • http://gps-tw.com/CKEdit/upload/files/6526910302.pdfIn PDF document text
    • http://crosswaysrecruitment.com/userfiles/file/kibodavolijuxukar.pdfIn PDF document text
    • http://mecateengenharia.com.br/ckfinder/userfiles/files/23025480630.pdfIn PDF document text
    • http://gbfrjournal.org/pds/userfiles/files/5976386737.pdfIn PDF document text
    • http://xn----1-6cdapb2bdyqawnpcindqfc.xn--p1ai/media/file/20445375012.pdfIn PDF document text
    • http://moskvaznaet.ru/upload/files/60375051098.pdfIn PDF document text
    • http://jmyhship.com/uploadfile/files/1362151081.pdfIn PDF document text
    • http://russkiivopros.com/images/FCKeditor/file/32344427122.pdfIn PDF document text
    • http://glamour-nsk.ru/ckfinder/userfiles/files/ronorixiwedu.pdfIn PDF document text