Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dc92604c49c110b…

MALICIOUS

PDF

91.4 KB Created: 2021-07-03 05:35:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e441360ff9d99979c99007dacb9b9a70 SHA-1: 19154de85d75968d1f18a646321cc285cc6e6080 SHA-256: 3dc92604c49c110bf6fdd22dea77a26bcf145f2a8c514133619d2d6e2deebd58
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file contains embedded JavaScript, a common technique for exploiting PDF vulnerabilities or initiating malicious actions. It also features a link farm pointing to multiple distinct hosts, many of which appear to be compromised WordPress sites used for hosting PDF files. This suggests the PDF is designed to redirect users to malicious content, likely for phishing or to download further malware. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3433

Heuristics 6

  • 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.
  • 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://b-solutions.net/userfiles/file/leluwogewovomozib.pdf In PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095d284c3349---3037351923.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c3bccd5a9bd---96608335972.pdfIn PDF document text
    • http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/zixenupasozegisivakiribo.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/995f97780d0da8ebf547ccdf1d2b414e/xiruges.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609b17005d336---sezoxopamapedurugenule.pdfIn PDF document text
    • https://hpsoft.shop/upload/files/75116546730.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/jl7eoh4634inrt3n9dfj9o3f0s/ragamuwuvopufizabogupe.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b9fb272a6b3---47219226406.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/78116265513.pdfIn PDF document text
    • http://artospace.com/pics/file/19455078386.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607007e97a56e---zuxodakexefawavodig.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/pefaduwokipowokelofudu.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/62819kjpsvikoglt4bcgqosvfd/1327327665.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a777897135f---88648678891.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1607fff6435075---85294828331.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/dexuxowinaxoxovubemebipok.pdfIn PDF document text
    • http://southport1969.com/clients/861680/File/bezegawajof.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bce8b983ad8---26164703541.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/2583eeac191a32a808e173cf31f96a6d/82184253525.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/774049d45a688b2a016181fc76f30ee5/fobelejipodi.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/c71bd43ca900ee4219d219e7d1dd4822/25772416185.pdfIn PDF document text
    • http://naturallabs.de/userfiles/file/48803085455.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160c9bd81e94e4---42181242159.pdfIn PDF document text
    • https://gachbinhduong.com/upload/file/wewujadiwizusudobov.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/rrk4o7rqtcllihqk0hrhpf3t94/82240950100.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/bajivadivifuxuxaxed.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=sermon+on+the+prodigal+son+in+the+biblePDF link annotation