Malicious PDF — malware analysis report

Static analysis result for SHA-256 af8b8afab4030afb…

MALICIOUS

PDF

303.8 KB Created: 2021-06-22 21:34:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d3de62e6973cca52eb5ae892d23c2d7a SHA-1: 9b99d57911fb213a389ec04d1855dc98d6f13047 SHA-256: af8b8afab4030afbbff76bf35556618b0da3fdabca208d957feb5a363f2d3523
124 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to compromised WordPress sites, which are likely hosting malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of a link farm on compromised CMS uploads suggests an attempt to distribute further malicious files or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9533

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
  • 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.
  • 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://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16076e81f615bf---dugunopevosevatag.pdf In PDF document text
    • http://yilip.net/userData/board/file/91459872987.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087b9cd7516a---judumitaperigi.pdfIn PDF document text
    • http://blissrenewbeauty.com/newerac2c/userfiles/file/53600567312.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160990bc7d8afd---95538837863.pdfIn PDF document text
    • http://bkbflooringusa.com/userfile/abbey/file/jelolemam.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/k613nfo4aq7boigbnfonmm1smq/60071285558.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609476cdcfeba---22128368869.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160807b51b4851---42747340779.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ced1122198---8854204094.pdfIn PDF document text
    • http://oilandgaswork.com/userfiles/file/89255185056.pdfIn PDF document text
    • https://gites-les-bardots.com/userfiles/file/9605727189.pdfIn PDF document text
    • http://jtour.vn/userfiles/file/pifonenovikalefaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=computer+applications+in+construction+management+pdfPDF link annotation

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