Malicious PDF — malware analysis report

Static analysis result for SHA-256 711b530c1f4c898f…

MALICIOUS

PDF

51.6 KB Created: 2021-06-12 17:58:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2616a0c7bf19f968b3e2b92093e822a SHA-1: 82f9fe54b6484286944706b50a60369834cbc6ee SHA-256: 711b530c1f4c898f702a43d64086e32b24ac35c9c1e6167a46ce3daacd58b073
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to compromised websites, many of which appear to be hosting malicious PDF files. The presence of 'utm_term=ssn+card+psd' suggests a phishing lure related to sensitive personal information. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for distributing further malware or conducting phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6925

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://infrive.ru/uplcv?utm_term=ssn+card+psd
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071add068099---3968901690.pdf
    • http://rolfingnaples.com/clients/a/a5/a5422f62036d2d393d866963e902351c/File/jojaputifeb.pdf
    • https://geneticapanama.com/userfiles/file/73859059282.pdf
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/d28a859faf31cf3e65ec446d4a5152b9/wekusegub.pdf
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/18fb7919c073a47d704acb2becfae5ff/8915333361.pdf
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160942e7dd4fab---kunavusazog.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1608e5e288c022---75531003025.pdf
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16091d328b4df6---fedenuganokam.pdf
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/16077b6ea262b2---lapofuwasogevanosel.pdf
    • http://gorisum.net/fckeditor/upload_file/file/24918220370.pdf
    • http://atomleasing.ru/media/File/detajabijesitipuzibado.pdf
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/2c3225b8a561d6d9ef939850f9f71586/wovusiwil.pdf
    • http://www.ecvbrass.ch/user/web/file/78372541093.pdf
    • http://zetrade.cz/userfiles/file/nijawobiremovazulat.pdf
    • http://ahsaipu.com/v15/Upload/file/202157055246383.pdf