Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bfd5c8a9bcbae8c…

MALICIOUS

PDF

85.9 KB Created: 2021-07-19 21:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 1c3f1b9300d008d28679603dc63f03df SHA-1: f4670b260fefdb0e2934fbf8ff5a6d2b621f1935 SHA-256: 2bfd5c8a9bcbae8cc4ff2d11061c76df00ed7721105bc6167e493cd1d9e5830e
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external links, many pointing to compromised WordPress sites or disposable hosting. This suggests the document is designed to redirect users to malicious or SEO-manipulated content, potentially as a lure for further exploitation or phishing. The ClamAV detection as 'Pdf.Phishing.Trojan' reinforces the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5018

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://cec-intl.ru/app/webroot/files/file/kepisebipumi.pdf In PDF document text
    • https://butchercurnow.com/img/shop//contents/32948848026.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c9f3c27be43---80714461602.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/2b47256c40048521bfa54bb75a6527a1/kasagavam.pdfIn PDF document text
    • https://tungqibiotech.com/upfiles/editor/files/47824306715.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/7a7b7775c66a987276e5bd2e4ce60925/dirubemokir.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/3c344559d17f73f0c360dedcc846c2dd/89234342556.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/bks2qn8iq66eq4pdsq57ssoffj/40064358126.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094cb1811796---81523247197.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160bbdeb73f1de---54562632315.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16073ac681b345---71637073760.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/1c51a1110ebcee1354fac945270ff2b3/1065775394.pdfIn PDF document text
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/69d68894e81199b57743c9e45c7097fe/71798563465.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083442ea42c8---31546678353.pdfIn PDF document text
    • https://vietnamairlinescorp.org/js/ckfinder/userfiles/files/jomabilesimep.pdfIn PDF document text
    • http://brilliantsolarpaneling.com/userfiles/file/66680046588.pdfIn PDF document text
    • http://seashoresilverlabradors.com/clients/4/48/482fd9669fb3260065120a60ccac5e48/File/faxevipojimisuvapa.pdfIn PDF document text
    • http://kartywspomnien.pl/uploads/assets/file/80634198603.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/54308b3d462c8581eb960b3fa149e8bd/ridavanugusukukeretuz.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160824e4730982---59711829200.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/bb51155e2fe01a6ff13364188bb0f678/58445170015.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/62b908580be74bb4d6928ad300477bd4/70806891527.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/cdt6f30lq3cr5n09f5acg9d0te/batapo.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/24ccc9411104b9ab6e45bbaac8b28ba6/15069305010.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=how+to+plant+a+crimson+tree+in+minecraftPDF link annotation