Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c4f6ab70533296d…

MALICIOUS

PDF

90.1 KB Created: 2021-08-18 02:38:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c1d9cbce78f11efe485e8f6ed47a6fce SHA-1: 9a352ef5e7a7d73c80109f7c175f7373903c7c11 SHA-256: 6c4f6ab70533296d69a2a9b0ce01345ee466d973c051eaa40559ea79be7c83de
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9197

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://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae523797e88---kuvufifaluxosif.pdf
    • http://myucmas.com/userfiles/file/22449687416.pdf
    • http://cokhiminhhien.com/media/ftp/file/93790008596.pdf
    • http://immodraft.de/images/architekten_agentur_images_/file/dutelopixugal.pdf
    • http://bright-mineral.com/uploadfile/file/2021071600290014.pdf
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16097778672ab4---gutuz.pdf
    • http://avandcie-energy.com/ckfinder/userfiles/files/74846375773.pdf
    • https://phuketwebstudio.com/ckfinder/userfiles/files/46270204421.pdf
    • https://kurishupally.org/userfiles/file/5902381002.pdf
    • http://local-minicab.com/survey/userfiles/files/niguburufugazafuvederawo.pdf
    • https://lose-weight.tw/upload/files/96207504955.pdf
    • http://terralis.eu/catalogue_dynamique/file/ninepudepumilezibez.pdf
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/22pujgc688j6isgr9d09vnmt5a/bufiwawoduzidojop.pdf
    • https://ludifrance.fr/userfiles/file/71429459906.pdf
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b8026f2d5ef---8792671733.pdf
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e8138b6a8b---wawilowo.pdf
    • http://asbufestival.com/uploads/FCK_files/file/verirededupajigox.pdf
    • http://allseasonsart.com/uploads/fck_uploads/file/96253669719.pdf
    • http://abw10thstreetne.com/uploads/files/52159150646.pdf
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/v149i0t3k10g7g6u4591jug2t1/93815761186.pdf
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/a19c4eb037d079cd261bb92ace1108e2/79760889474.pdf
    • http://eternoohydro.com/d/files/wujubifirolokaxewe.pdf
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/df161625700cd318aae613ace642ce62/rijelapalapoxoveramur.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=guia+para+examen+ceneval+de+medicina+gratis

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