Malicious PDF — malware analysis report

Static analysis result for SHA-256 861c33e2d79f3f39…

MALICIOUS

PDF

48.4 KB Created: 2021-06-10 13:45:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 919ac6863019ca91b5bf468b4c493878 SHA-1: cc0baa0aefdd1570d7ec7b8ef284376b9f396732 SHA-256: 861c33e2d79f3f397a1c7cdb2a062706ed0127ffe7f7834ba4280adf9fb8e846
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document presents itself as a "Rapport de stage bafd" and contains numerous links pointing to compromised WordPress sites, likely serving as a link farm to host malicious payloads. The presence of embedded URLs and the nature of the heuristics suggest this file is part of a phishing campaign designed to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8632

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://philabc.ru/uplcv?utm_term=rapport+de+stage+bafd PDF link annotation
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/3a7a69e4087c1cf40ad255f4d69e8572/juxanubalijewabox.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609164e5d9ad6---xeferuwumerug.pdfIn PDF document text
    • http://bike-aholic.com/UserFiles/file/16976465537.pdfIn PDF document text
    • https://www.letspassdriving.co.uk/wp-content/plugins/super-forms/uploads/php/files/e9i6cg559j6fvub5t530f5tvv0/weworameva.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/89eff1dabfa13326a5c4712bee143f5f/33070274109.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acb0483d142---14122433793.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e851366d3f---jaberafokuvilo.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075df7c9a21e---67032543945.pdfIn PDF document text
    • https://hfdjet.com/wp-content/plugins/super-forms/uploads/php/files/6093803de12c764641de32f5cead8f1b/pikagepe.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/hca7kjtds6sv5ioq2hgvfoshs0/felugakomofemim.pdfIn PDF document text
    • http://nextgt.eu/uploads/file/kirirotupojigujubu.pdfIn PDF document text
    • http://mientaytourist.com/uploads/files/temaxabewarijujuk.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160ac16a1b9c6a---saromoforefijes.pdfIn PDF document text
    • http://tamilannuaire.com/var/www/vhosts/vps296430.ovh.net/tamilannuaire.com/images/file/rukonikijipe.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afe96c43cc5---59418020341.pdfIn PDF document text

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