Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b379cb1b10c71b0…

MALICIOUS

PDF

67.0 KB Created: 2021-09-20 00:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a7e759ebd15d649f5717728484bcbcdf SHA-1: 71755173b06766633238e5446f0bafba7f91d5ed SHA-256: 6b379cb1b10c71b09b5ac70415c6e7606c9390c2c5fbc8c9fa0582eb888d6c5c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ClamAV as a phishing trojan. Static analysis revealed numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the ML classifier's high confidence score indicate a strong likelihood of this document being used to distribute further malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6756

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 http://assushop.com/userfiles/assushop.com/file/govopolaxenevodobi.pdf In PDF document text
    • https://deycaterers.com/ckfinder/userfiles/files/53528896864.pdfIn PDF document text
    • https://abogadosaccidentealicante.centralcms.cloud/galeria/files/52499099945.pdfIn PDF document text
    • http://elai.kz/upload/2021/09files/210917023241803128hrvli.pdfIn PDF document text
    • http://studiogaleazzo.eu/userfiles/files/13286063227.pdfIn PDF document text
    • https://clubforeducation.com/FCKeditor/userfiles/file/dixugijawodolinobok.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132855a05113---91370651803.pdfIn PDF document text
    • http://tokstar.com/_UploadFile/Images/file/mikigewikuliwisesip.pdfIn PDF document text
    • http://lesbambousbleus.fr/ckeditor/upload/files/kifipofepagovogo.pdfIn PDF document text
    • http://crystal-lamp.ru/uploads/files/80164205797.pdfIn PDF document text
    • http://ideviceplus.be/app/webroot/files/userfiles/files/67461488551.pdfIn PDF document text
    • http://studiolaviano.it/userfiles/files/rovadaz.pdfIn PDF document text
    • https://portalkucharski.pl/app/webroot/media/files/48970090361.pdfIn PDF document text
    • http://zajazd-broadway.pl/galeria/file/gerukurewode.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/tewelubizo.pdfIn PDF document text
    • https://lockerova.eu/admin/upload/documents/51417164890.pdfIn PDF document text
    • https://emailing-online.fr/uploads/userfiles/file/23282860566.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/072d5dc0511240830817b56f48470c02/xubizes.pdfIn PDF document text
    • https://minjar.mebel18.com/uploads/files/82535594244.pdfIn PDF document text
    • https://songhong.info/userfiles/file/kutogamibutedaxuguzip.pdfIn PDF document text
    • http://philipp-haberland.de/images/upload/file/3770473524.pdfIn PDF document text
    • https://istanbularicilikfestivali.com/upload/ckfinder/files/zixipedidulo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=telefonate+aufzeichnen+androidPDF link annotation