Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e057fe3bcfce07…

MALICIOUS

PDF

276.4 KB Created: 2021-06-24 06:57:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 1cabab7a3361e9bdddf7c40db9d77006 SHA-1: 9128e5c74bb78200156886a44102d192ad3930c6 SHA-256: 71e057fe3bcfce07832f8b9f6551f6a752ed68a0696aa62809369f84fd936938
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of links pointing to compromised WordPress upload directories, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to deliver a secondary payload or redirect users to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9166

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/8cbba92591f8f0bb7cea4f790dbaa4d0/88273484531.pdf In PDF document text
    • http://zonweringnederland.com/ckfinder/userfiles/files/5211681880.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160729d18b9234---reletimetugu.pdfIn PDF document text
    • https://moraure.net/js/ckfinder/userfiles/files/mavumupurenavoxif.pdfIn PDF document text
    • http://wittlich-luexem.de/userfiles/file/makusovov.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/7c795b049ad0b2afeebce9bd88c793a9/41651726668.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/f3b487adaac2e382a7313f7cfbc95a46/71963793118.pdfIn PDF document text
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/18b9629d03d98cba5612e5e6f53f0b5a/naganizarami.pdfIn PDF document text
    • http://bmcnx.com/userfiles/file/bilave.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/247286232996d5695cd69b8dd22a8d51/riwokodogekiguxoxir.pdfIn PDF document text
    • https://dollarplus98.com/images/upload/files/54351786997.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/4d01914e301a4dbc67a437e7b1280b1b/66787251894.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/04f569183cd6b90644cb1691c6ceaf11/34446000619.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/gefig.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/5811bf94d800d96c69c07b3466694ce8/nuzivezolorasixafajonozo.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/5e913fec38e119d9845806cc47bd1de3/zoxosokonus.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=fueltech+ft+450+manual+espa%25C3%25B1olPDF link annotation

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