Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfcfbe0067084138…

MALICIOUS

PDF

100.1 KB Created: 2021-08-18 12:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: d7a5ff31b00083b739370ea9ef21fff7 SHA-1: 90d57de81576c39553efa89fa7bdf476a7873bb7 SHA-256: cfcfbe0067084138b51dc5818584e415ff73344c625d4c2af87b6d142aff6bb3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a link farm with numerous URLs pointing to compromised WordPress uploads and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of multiple external URIs and a link farm structure indicates a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8252

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://garglob.ru/uplcv?utm_term=ejercicios+de+fracciones+para+ni%C3%B1os+de+tercer+grado+primaria PDF link annotation
    • http://toptoptraining.ru/img/upload/file/4330544745.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/bagupumimatew.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/83d60c9fe89347d4cd19312497499c02/tegemenatu.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090fb8483bff---govelo.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/9f98832faf9d7ad643be26672d347844/gezozefeparawos.pdfIn PDF document text
    • http://mavelikaradiocese.org/rapha/ckfinder/userfiles/files/rojoxuxijapavupajew.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075dc9b71baa---xumowotoseramerukoje.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/65964434628.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/0731b4001bed11351b716ad42f9b100f/dutegalit.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160956881c4013---dukezodor.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/5344286445.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a9325dd16a---81955992287.pdfIn PDF document text
    • https://luatsuavina.com/userfiles/file/xumewiloxixuvobip.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/9d80283484e2d180ed5585dd53c84dae/sululewedit.pdfIn PDF document text
    • https://www.mediawerf.nl/bundles/store24backoffice/ckfinder/userfiles/files/dusewebu.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161182dfd6e05e---34539598493.pdfIn PDF document text
    • http://funagamex.vn/PhuongNamGroup/userfiles/files/54103028111.pdfIn PDF document text
    • https://thaiahpa.com/flash/files/15908333924.pdfIn PDF document text
    • http://4bx.pl/public/file/tevaretowitol.pdfIn PDF document text
    • http://righetti-ticozzi.it/userfiles/files/tosozikamisu.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093cff2f3d27---88488704394.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba3a8e5a6e---7833313548.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/6ef2510fdb755b0e2cef69e05ff91844/podugoj.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/fnii48avsl4ao4bsi1d4b00n5f/20789670712.pdfIn PDF document text
    • http://greenbrier101.com/userimages/9856280725.pdfIn PDF document text

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