Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d6fd289acd65645…

MALICIOUS

PDF

64.0 KB Created: 2021-09-01 14:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 1e76f892db7090cb4537b6528a23c5f5 SHA-1: 1336b72a3a54d5367f98fa2cba4ad6dc8233a7a4 SHA-256: 2d6fd289acd65645e4b6f0d6caa8c7a21073edde066d30ed5f671e53c22df027
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9532

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 https://ketchas.ru/uplcv?utm_term=cs+executive+question+paper+with+answers+pdf PDF link annotation
    • http://md-servicios.com/userfiles/file/fenaxujin.pdfIn PDF document text
    • http://greenvisioninternational.gm/userfiles/file/xusozixubusoluwidekeku.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606c78406de52---gurimakaxurip.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610320f9be57c---nidatakuxarefemike.pdfIn PDF document text
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/f11a24ad9f395bf4f41efc2fda7cf567/dumefuxexovesi.pdfIn PDF document text
    • http://ipllaser.in/uploads/57866597327.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/52e71a139629c09d6d200697bf413bf9/76904450184.pdfIn PDF document text
    • https://niboparis.com/upload/fckeditor/file/1627127962_1.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4913e7a0e4---77257314178.pdfIn PDF document text
    • https://legacydockandmarine.com/wp-content/plugins/super-forms/uploads/php/files/8c0c88f5bb6c8ccf7c7149d34f4e47e9/74331880744.pdfIn PDF document text
    • http://allnatureint.com/userfiles/file/nopetuto.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/41574520706.pdfIn PDF document text
    • https://blnk.eu/userfiles/files/tofulavirapamaz.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd1cf344c33---16558258803.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c511ef697e2---34746896078.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a27fa53152a---pezesebabim.pdfIn PDF document text
    • http://kredoteka.ru/uploads/file/47101303317.pdfIn PDF document text
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/25eepgqjj5t7br7m1dkv2tqr85/witojivazirowizuseke.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/15fb7dbc2c0a5865c09bcc0660fb2f99/wobelonevebemen.pdfIn PDF document text
    • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/gusedanujenuvu.pdfIn PDF document text
    • https://cafesca.info/ckfinder/userfiles/files/7600055643.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942da2f1a6f---nobudezabuvapoweb.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/vuponidijusapatizadoviz.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/678ae7ec13a0013e4f8d1b33e4e2740e/poresodared.pdfIn PDF document text
    • https://www.weldcor.ca/public/ckfinder/userfiles/files/16446682881.pdfIn PDF document text

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