Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e22cb6ed2c64547…

MALICIOUS

PDF

70.2 KB Created: 2021-09-07 19:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0361ec1d46568f8e01a8a457536a5aed SHA-1: 7e5c2ce53f230fecd4cf1d9c1a4ede33c9c18d0e SHA-256: 9e22cb6ed2c64547e3dbd52990a8a7d7254406cb6226a62b24302c0f4336a9aa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as a phishing trojan by ClamAV and flagged by an ML classifier. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a non-clustered link farm on disposable hosting, further supporting the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7247

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://pnmanagementsolutions.in/uploads/gukameverez.pdf In PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/5b48a3c3631d53ba19af3075c6b81120/xokedopatijo.pdfIn PDF document text
    • http://meandnetworking.com/ckfinder/userfiles/files/fubazilusunemixubonev.pdfIn PDF document text
    • http://gphs84.com/clients/866382/File/57957801159.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/046af33819468e89a3cd734564a40d99/vinij.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c25789bdbac---26256663073.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16079b71a5c8cb---zosixetubufivazu.pdfIn PDF document text
    • https://lemarko.com/userfiles/file/46767268352.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c04a97b3bd8---98829200174.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/c8d4ad4b1d5cdc1e406665f6e286aedd/1063343677.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d18b0f5757a---zelidozapibunav.pdfIn PDF document text
    • http://china-hold.com/UploadFile/file/20210513181953864.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1608a80a7455af---xesovumipago.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/6o5c7n6ts984epi8ms6moult65/gozegipebigodekezufij.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136d2b6ee989---lipuxuzegizebavo.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ce61d105a5c---jinusa.pdfIn PDF document text
    • https://clubforeducation.com/FCKeditor/userfiles/file/58918569557.pdfIn PDF document text
    • http://esejsc.com/upload/files/88775110875.pdfIn PDF document text
    • https://corpusbg.com/files/fck/file/kidipatojalipupuwawuna.pdfIn PDF document text
    • http://takeacode.com/user/d41d8cd98f00b204e9800998ecf8427e/file/43502753251.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/16103ec67246a9---sofakonomumagoda.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=journey+to+the+centre+of+the+earth+novel+pdfPDF link annotation

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