Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d4e56ba3d5042c…

MALICIOUS

PDF

59.2 KB Created: 2021-09-07 19:34:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ac9361521763c6a4b80317d65616ef88 SHA-1: 8880b3818596be755d6c910cc30cc619ac59d1de SHA-256: 11d4e56ba3d5042c2d65b4410d113cc788025e40807629083db5083e79bf5f70
94 Risk Score

Malware Insights

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

The file is identified as a PDF containing multiple links, several of which point to compromised WordPress sites. The ClamAV detection 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to redirect users to phishing pages or download further malware. The presence of numerous links to potentially compromised CMS uploads indicates a pattern of leveraging vulnerable web infrastructure for distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3712

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 http://brava-ekb.ru/userfiles/file/pifewejuseragun.pdf In PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a45d0763e76---rixevep.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/batososokoz.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160928b1aded91---dufejukozawevaturipif.pdfIn PDF document text
    • https://rh-h1tapi-turbo.com/contents//files/71943739476.pdfIn PDF document text
    • https://scapetime.net/images/website/user/files/meramixofabivom.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/63de1d37162c6dcfca7e2c2ce061ed5a/vezevajesuzipigevizuzure.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16136e76d6b5cb---gepujiboverijevixuvidi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=felsefe+nedir+pdfPDF link annotation

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