Malicious PDF — malware analysis report

Static analysis result for SHA-256 3112652329fe8a83…

MALICIOUS

PDF

50.3 KB Created: 2021-06-17 23:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 08c38a538104e856fd55be6badcec811 SHA-1: 9f3e3e2b682468987b6de85061a7c6f97ad80764 SHA-256: 3112652329fe8a834d5e5d3bffce32a6ac9e142aee04cad178e4220c2dec41f5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to compromised WordPress sites, likely intended to trick users into downloading malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics, along with the ML classifier and ClamAV detection, strongly indicates a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the structure suggests a lure for potentially malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

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://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/27c4af53f575be2383125b86725ed224/69456981687.pdf In PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa4b98e54d3---jazerosonuwosimitimerivug.pdfIn PDF document text
    • http://bora.su/ckfinder/userfiles/files/zubufopi.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/fad61d9a23af0d9f397057877abe0111/57154976080.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a2ccdddf541---sefonowu.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609a98e2904e8---44143187296.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/7db095784b7519e4f771f1c601ed8e5b/31390509286.pdfIn PDF document text
    • http://iphysiology.ru/upload/10517700844.pdfIn PDF document text
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/1n1aoarmitl36so26vnvpocols/nefukupupudax.pdfIn PDF document text
    • http://polymer-optix.de/userfiles/file/25474475724.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/8e9f53292bc5551257d99b27425d0c2d/soxutewerejix.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160c902ff017a4---76134441801.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/3e2b74819c7220ea4f1f71a3da57dfa8/32654410936.pdfIn PDF document text
    • http://alpanelektrik.com/depo/sayfaresim/file/tabisij.pdfIn PDF document text
    • http://scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/wowodonu.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/662c8612873eb1f03fcfc9c20414b7d1/rarokudonebulegitol.pdfIn PDF document text
    • http://dollreunion2020.com/clients/4/43/4392dc7a9e9236654a628da0af121bbb/File/71231507464.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=pubg+mobile+moddedPDF link annotation