Malicious PDF — malware analysis report

Static analysis result for SHA-256 b96f96bf18c2ccae…

MALICIOUS

PDF

67.9 KB Created: 2021-08-25 06:09:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6b83fd8180666e25db4759c1e2dba931 SHA-1: f3d1b70a11f4f0da509399e3db4088114a4b1f09 SHA-256: b96f96bf18c2ccae4f319e43de07ffbe0cdc3bee11404a58981f44a446dd4cfb
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious content, disguised as a character certificate. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a phishing attempt. The embedded URLs point to compromised WordPress sites, likely serving as a distribution point for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4829

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 https://cructi.ru/uplcv?utm_term=character+certificate+for+central+government+jobs
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160dee9d6cfebc---fogixolo.pdf
    • http://bahsclassof1965.com/clients/1/1d/1db829f64c2e26d3b32b12ccabba4d7c/File/fufokiwebigusepitasosu.pdf
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1610a87a305ecb---90326612282.pdf
    • http://savitapiti.org/ckfinder/userfiles/files/talijafoninefativux.pdf
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a159e5d4841---17147106601.pdf
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/0lequteljkrninanoq9gpsu4sc/vonarotoj.pdf
    • http://ahcxdq.com/uploads/file/151236103974.pdf
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160711b748a8dc---kosirituniwod.pdf
    • http://aksaaydinlatma.com/img/editor/image/file/56192791801.pdf
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091d44ae7036---20871830459.pdf
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/26497a5563cd01fa56f204c43fc168af/66067542904.pdf
    • http://12shio5.com/contents//files/nifojesimabo.pdf
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608668eee1ba8---3979465542.pdf
    • http://winhazel.com/indigo/ckfinder/userfiles/files/68824661064.pdf
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/mgivb4esh2ajlnrghpp10ttnu6/soxujirezenefokejo.pdf
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609539d7842ea---73264771203.pdf
    • https://karpzbeldowa.pl/uploads/userfiles/files/66842948696.pdf
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608dad29c5c72---50047219339.pdf
    • http://zzweien.com/d/files/36956665990.pdf
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c23d57c8648---18585342663.pdf
    • http://fiumevivo.it/userfiles/files/84003942778.pdf
    • http://zjpjxt.cn/upload/uploadfile/file/bafizemuvaj.pdf
    • http://ateliergermain.net/sites/default/files/file/382728807.pdf
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f355ee419c---nogivipuwuzupidexoto.pdf
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/de0f76d7324b741c6068e1c0f93e5f0a/72809577860.pdf

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