Malicious PDF — malware analysis report

Static analysis result for SHA-256 a792eaf9695c187d…

MALICIOUS

PDF

64.2 KB Created: 2021-08-11 11:49:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 0f1d50d47d480797d5de375d99b28709 SHA-1: 65225db6cdd939550c4c64790a75cb3c2790fc5f SHA-256: a792eaf9695c187de7ab0588bd0176848f9fc0452e42f443dcb7194b0464cb2a
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised WordPress upload directories. These links likely serve to redirect users to malicious content or download further malware, aligning with a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7791

Heuristics 5

  • 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.
  • 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://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078c399b48ad---wasiwi.pdf In PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/zonononilidisex.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/76131ccec7d1c6339bdc29e31f464858/3672275733.pdfIn PDF document text
    • http://ipceurope.com/assets/file/dijopalumuneraso.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/16110399b8550b---19927797605.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/160967a9bd31a6---30765503602.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b73930154fe---68723448943.pdfIn PDF document text
    • http://mikllc.mn/uploads/files/13055208547.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/e1da8beb9eec4f95a291969575de90f5/nopalenezitira.pdfIn PDF document text
    • http://jatyn.cn/upfiles/202105/file/1620525457.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609e51f2c4924---79730822205.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608a08381dae9---jaxevexex.pdfIn PDF document text
    • http://aaykpn.com/uploads/editor/files/34938836852.pdfIn PDF document text
    • https://blugarden.eu/file/dewifuno.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d192e2c4e44---nojokekajozuriro.pdfIn PDF document text
    • https://binarbaidequipment.com/public_html/userfiles/file/92298631616.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608a73ab0fe33---xuzetadudujepuxi.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/5aac8dcfe5967b7e6dae48c6b4618fb9/5595205679.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/18752424883.pdfIn PDF document text
    • http://citra.cl/userfiles/file/lijuwofujerituxuv.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/17052982169.pdfIn PDF document text
    • http://penzion-u-zamku.cz/files/file/zutobitabarejagujijejosal.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160727fa19a65a---luletopazibisifikuxudo.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608702f6db5cd---33542276874.pdfIn PDF document text
    • http://maekalocal.com/Maeka/UserFiles/File/varibapugutijuxozefexixaz.pdfIn PDF document text
    • http://chinazzjx.com/d/files/14910022490.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=descargar+ritual+de+la+adoracion+nocturna+mexicana+pdfPDF link annotation

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