Malicious PDF — malware analysis report

Static analysis result for SHA-256 43da4384cef671e9…

MALICIOUS

PDF

37.3 KB Created: 2021-07-05 07:04:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 93004eb302af40c60ca6be96db3ce2df SHA-1: 7daaef618ae6ca783e512865cdb64244d13b4668 SHA-256: 43da4384cef671e9f068c68b03236063cc460495720cbf4bc30aba9c28aa84e1
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7998

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://dietacud.eu/upload/file/6533975947.pdf In PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/60dc2cb6855a7b45f0c2db32d936bbc2/nufipukomemusidop.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160910d9560eb9---8149195701.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/lenanubadowisiv.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/35656891861.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3539ef111---88791516694.pdfIn PDF document text
    • https://castilloexterior.org/ckfinder/userfiles/files/22794199088.pdfIn PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/8b41e8bfbdf689ba39e9ffdb90cda509/67693871174.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/dofafekefunukorinagIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=veal+shank+recipesPDF link annotation

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