Malicious PDF — malware analysis report

Static analysis result for SHA-256 b397b704e6064ef8…

MALICIOUS

PDF

64.0 KB Created: 2021-07-13 11:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d1e5a59c408f39c482a504477ccc6208 SHA-1: ebc2bf9cc94f1e2deecfdaa74902443c51d4e628 SHA-256: b397b704e6064ef833480ac9280b824a1a15c403a6ada3a871d54489de700b6a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of links, many of which point to compromised WordPress upload directories, suggesting a phishing or malicious redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6978

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://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/9a15e7b1fa9afe95e3b3ef04b38737c6/71285431773.pdf In PDF document text
    • http://bandenplaats.nl/cmsimages/file/91707278916.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/8cb741b8c4f9f4b6e82e59786ff5d668/vabibezunawe.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6cf3f992d2---topubagawudu.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d6bf4b24623---6925486987.pdfIn PDF document text
    • http://allmedicus.com/userfiles/file/78445376205.pdfIn PDF document text
    • http://fiumaradelsossio.it/userfiles/files/wakoweki.pdfIn PDF document text
    • http://kibunajcc.com/ckfinder/userfiles/files/silizajunidafi.pdfIn PDF document text
    • http://richardchong.com/userfiles/files/70648007929.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160954ab561cbb---84302982533.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/80399055406.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a52855af10a---68377801255.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/3d739e88be17feb7ac78492ca86daa25/45112064192.pdfIn PDF document text
    • http://pogservice.ru/userfiles/file/jemuwinasamananapi.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/1d6d9c0f313adf7cb9732ed7d4f9a5cc/xujebajurajidisow.pdfIn PDF document text
    • http://technoculture.cz/admin/upload/file/wipotevegidoberolimaputa.pdfIn PDF document text
    • http://score1forspencer.com/clients/4/45/4587145e2679cb7673d0e21b436e5c25/File/lomomoxusowedovirosavu.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/103748280860a61e596660c.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec206440bc---purixavugekof.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/217e3067086d27494898502ae4cf3b2d/25643897956.pdfIn PDF document text
    • http://odnoklassniki-files.ru/images/uploads/files/losedogokozesofimagezu.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e8a2f0318f6---82928009295.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=autolytic+debridement+meaningPDF link annotation

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