Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2fd15156d04ddf6…

MALICIOUS

PDF

63.6 KB Created: 2021-08-16 20:06:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 320b5221565d93509ec4fcf10350bff9 SHA-1: 2154dc1b7687cdc43954c871dfaa070d0bd58e71 SHA-256: c2fd15156d04ddf6e8577bce45044adbffb92527c4c2e90fc857e023ab9a6b85
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous links, many of which point to compromised WordPress sites and disposable hosting domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links. No scripts were extracted, but the structure and URL analysis point to a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7390

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://thechelseaff.com/user_uploads/files/zevirutiliw.pdf
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3b4f7db24---koxigivikat.pdf
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4b21c5e2d6cda55526f5d9a6207e8183/26974591697.pdf
    • https://patriciobanados.cl/upload/file/
    • https://accesoriosalmayor.com/images/userfiles/file/44680774231.pdf
    • https://godahoian.com/app/webroot/upload/files/jariwasebajazedevazujeb.pdf
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f44f003ac8---siwerofexoted.pdf
    • http://adirondackseafood.com/ckfinder/userfiles/files/famuxovalipixusi.pdf
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/16099ad9872fc0---36509759320.pdf
    • https://icoachyou.biz/images/ckeditor/files/96824360049.pdf
    • http://avs-market.ru/admin/ckfinder/userfiles/files/zufejopubowoxo.pdf
    • http://haisushitogo.com/uploads/files/rovekadorekudimu.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609647cb40916---99984190949.pdf
    • http://chanhbon.vn/media/ftp/file/70558754683.pdf
    • http://box8websites.com/ckfinder/userfiles/files/35152874461.pdf
    • https://ruiguoex.com/upfile/files/2021/07/01/pulebifezew.pdf
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/l2olltuq3n83uv95mkcvv7eoa5/99545453317.pdf
    • https://srmhospitalities.com/images/bulk_images/files/70303708666.pdf
    • https://rjpexport.com/files/rifupifobogigosoxelip.pdf
    • http://sibleyestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/38247355583.pdf
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/28nqkgaflq0gra6fv2pftm51g9/tugutuf.pdf
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607febdfcfece---xujimezepibibusot.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=movie+trivia+questions+and+answers+2017

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