Malicious PDF — malware analysis report

Static analysis result for SHA-256 03532f7b7221b0bd…

MALICIOUS

PDF

45.6 KB Created: 2021-09-17 08:26:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: dd63621a335b10b5fe87dd8751558319 SHA-1: b628e18008b3ede5376a030b49bc9639f28c3708 SHA-256: 03532f7b7221b0bd617cac295ce7677a7dc0d334c64027a1b009f4b5f3f592c2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs pointing to various domains, suggesting a link farm or redirection mechanism. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware delivery. The presence of external URIs and a link farm heuristic further supports the conclusion that this PDF is designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5469

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://infrive.ru/uplcv?utm_term=spider+man+far+from+home+movies+123 PDF link annotation
    • https://cafesca.org/ckfinder/userfiles/files/50274471913.pdfIn PDF document text
    • http://louisamerino.com/userfiles/file/75729474213.pdfIn PDF document text
    • http://itps-group.com/uploadfiles/file/35156402870.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16137fbdec85ad---11697962332.pdfIn PDF document text
    • https://davidfoleyinc.com/userfiles/file/9682432820.pdfIn PDF document text
    • http://www.vljainandco.com/userfiles/files/31125892862.pdfIn PDF document text
    • http://elskenecologie.nl/files/871857375.pdfIn PDF document text
    • http://energosol.pl/images_cms/file/buxumudupirefef.pdfIn PDF document text
    • http://grimastone.ru/files/nomizazuxuxuwovoxibuzewuw.pdfIn PDF document text
    • http://sor1310.com/userfiles/file/93556414678.pdfIn PDF document text
    • https://sapsda.org/SapmaUserfiles/file/59255042322.pdfIn PDF document text
    • http://bbu.vn/Images_upload/files/lupedudon.pdfIn PDF document text
    • https://balbok.net/admin/ckfinder/userfiles/files/telivuzunisowinubefesaf.pdfIn PDF document text
    • http://swiss-ex.com/images/blog/file/saratigel.pdfIn PDF document text
    • http://fmdscu.net/userfiles/file/54917096243.pdfIn PDF document text
    • https://nichecnk.leaddeehub.com/userfiles/files/zidesadem.pdfIn PDF document text
    • https://mr-alian.com/upload/ckfinder/files/toniwavusemutoriwapuj.pdfIn PDF document text
    • http://studiotecnicopinto.it/userfiles/files/90615700950.pdfIn PDF document text
    • https://akonis.ch/userfiles/files/saxuxe.pdfIn PDF document text
    • https://hygradeinsulators.com/images/uploads/file/52864098742.pdfIn PDF document text
    • http://studiofagiani.eu/userfiles/files/refugofelenufurunorud.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137a8fbdcf6a---79678052736.pdfIn PDF document text
    • http://cppzone.ru/users/blogs/file/berosedobo.pdfIn PDF document text

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