Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ecbd5a8a7a36f6…

MALICIOUS

PDF

58.1 KB Created: 2021-08-04 19:02:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: cec08a4fc2780db51ea1aa8c265b7c91 SHA-1: cd0f4cb64a0290189bbc2930568ce88c8c3324eb SHA-256: e1ecbd5a8a7a36f6beba8a7f0ae49e6ce3afdefa646858f715e37681fe9fbb5c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document exhibits characteristics of a link farm, directing users to multiple external websites, some of which are hosted on compromised CMS uploads or disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to host phishing content or facilitate further exploitation. The presence of numerous unknown URLs suggests a broad attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8400

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 http://ridgefieldpark1967.com/clients/3/39/39eebdc8797e30ee23d4fd57d071fd44/File/jemowudet.pdf In PDF document text
    • http://bitite.lv/media/txt/122/file/kusipiw.pdfIn PDF document text
    • http://www.elitagida.com.tr/wp-content/plugins/super-forms/uploads/php/files/sefpt1dpjeqnduvah3vk414u00/dadobigivekeni.pdfIn PDF document text
    • http://pc-driver.ru/userfiles/files/49171633760.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a1e5c34f5---papikarusidaxojomavogike.pdfIn PDF document text
    • http://sbhs1967.com/clients/8/89/8985ce50e7417da620f75e2af787291b/File/kanuzobe.pdfIn PDF document text
    • http://lineshare.net/upload/files/20210715175829.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/89331698050.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db026ec3a8f---85062067898.pdfIn PDF document text
    • https://istocdukkan.com/userfiles/files/15558574811.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/366fd669403c170dfff4f29dc989d349/35779667664.pdfIn PDF document text
    • http://interreg-ipa-husrb.com/downloads/nikawazajobi.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/e02fa56d77ab0a623e3db026beb84b05/3655105221.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d0ffb7cf1---16862832230.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a41e132d7eb---41812720048.pdfIn PDF document text
    • http://azstorestudio.com/uploads/files/1752187745.pdfIn PDF document text
    • https://creteotels.gr/FCKeditor/userimages/file/18557201202.pdfIn PDF document text
    • http://okwmd.com/upload/fckeditor/file/61693746512.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081767ed7237---90804198377.pdfIn PDF document text
    • http://tbff-bygg.se/img/files/80144386006.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a791793872b---fikipetem.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/si5s9qb9pvmbidrngu5bg2pqpo/47545239411.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ab336f43e01---4139764521.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/nstq6itg253dojptuc7jg9m26d/depuxifeninufimafafike.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=how+to+download+fortnite+on+chromebook+for+freePDF link annotation

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