Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b3aef76e40af8e…

MALICIOUS

PDF

62.3 KB Created: 2021-06-28 04:00:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 5cf7d828e68c4fbeeb07e2553e86798d SHA-1: fa70f59b058b35933b8aef2c0b30825cebb46766 SHA-256: e8b3aef76e40af8e80454597668dc9f4a965eb09a536c52bcd07b346e6d6c51e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farms indicates an attempt to lead users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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=most+effective+martial+art+in+street+fight PDF link annotation
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4886b0c30---22349453757.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/76136eb183f6bd80a5895d0e65da317d/28153458020.pdfIn PDF document text
    • http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/68443846227.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c3951678af4---47055832595.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a908a01862b---20777347574.pdfIn PDF document text
    • https://fontaine-eva.fr/userfiles/files/buguxomerapixiru.pdfIn PDF document text
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/707b98af760e9851ce0e61237f59aa2f/bapaxitilinuxomosesira.pdfIn PDF document text
    • http://liffeyartefacts.com/fckimagefile/file/muzupudajijerifanivafiv.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/da9a87608bd5ff9535ded81f3e3e29cc/70424824507.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/517528f33c19417edebff003f6bc3c0a/wifonufulow.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b7cba646d88---78294677394.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/eahs639j3fpd8m92sspp7q4ne1/gapufojuzefubinobalawexut.pdfIn PDF document text
    • http://cngwalk.com/fckeditor/userfiles/image/musunegilenedi.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/cc0f311eac9ae26159df906d4061cb25/xonitugijunowanuko.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/8c618ea9b26cb494743681be71aa6a60/dopilakebulof.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/hg7747c4mv4jc5j95cv4keeac8/taneravesa.pdfIn PDF document text
    • http://csc-021.com/userfiles/file/20210628021350_wmgr93.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1dc88645fb---86977190170.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/bc5318240804a2ad236831dc6885e3be/fusaxijineg.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/88913d1ad00fe3ead859d202fc2a6e40/4852015425.pdfIn PDF document text
    • http://fandimnarodaku.cz/upload/file/zazazat.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f249fba116---20011764905.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/34186427472.pdfIn PDF document text
    • https://mediaget.com/userfiles/files/44423077560.pdfIn PDF document text

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