Malicious PDF — malware analysis report

Static analysis result for SHA-256 b36911497092e37b…

MALICIOUS

PDF

78.0 KB Created: 2021-09-03 19:06:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: c703253079638a33c15a6848bc56ec38 SHA-1: 03278d43b2b31b64add5388066cbb11f194305e8 SHA-256: b36911497092e37bc84b872646314d481fb3987bdaed765da56d317c8187a795
94 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains multiple embedded URLs, several of which point to compromised CMS upload directories, indicating a likely attempt to host malicious content. The heuristic 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' specifically flags this behavior, suggesting the PDF is part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier clean score 0.2012

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://kurek-rowery.pl/user_pict/file/zofujeratedigawamireroze.pdf In PDF document text
    • http://tentauto23.ru/ckfinder/userfiles/files/98775418813.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/3764c074471cddefef3d1f1190b36ab9/mosumenedafubogagizoji.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085c1df41ce3---buwovuso.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/c22c9d4121383f676fa34e51ae8ea57a/1869602433.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=stretched+too+thin+pdfPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.