Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bc8404885a050ef…

MALICIOUS

PDF

63.7 KB Created: 2021-05-10 14:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 016f02e29917a6d9aa8e7b6dcccfbdf7 SHA-1: 90c170f56f2cdd06680f7bf2be9aa6134602a220 SHA-256: 9bc8404885a050efedd478303c2e8d77e0be4b8996123c1669052c5ae2690044
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised WordPress sites, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The embedded URLs are designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7290

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://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/0220d58f965fd07175943dcfeacf8050/15738431438.pdf
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/573d11dded671847dcbd9981de9db701/xanaworosekutudalitad.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/3423deb33ad11e49bfc38ac037b47f8a/sizazajufatiresibig.pdf
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/cd1b9f9b12fab088e4b9a58220e2d4a8/kikuwurow.pdf
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/a169527760b525d07997864dc0cd387d/xevewapiledupatoso.pdf
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bce8268674---kozalumogix.pdf
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/3480da3ab2a8775228e569083adb6a58/zabimikuvotibogasab.pdf
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160865ccc9c47f---muxadivozipo.pdf
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/60a57ed2fada7d0f707b45434f76434b/61286595046.pdf
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608cbd8895e6b---volakogazowaxukixalu.pdf
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1607546e6779e7---90932552420.pdf
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160755981ba7ea---lapikupamowozumivato.pdf
    • http://alliance-ltd.com/userfiles/kodaworazoled.pdf
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/dc26cd7c71310baa4d1a94fff01405f8/77602574960.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=dhaka+board+hsc+result+marksheet