Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3b48d89140a9d4…

MALICIOUS

PDF

52.3 KB Created: 2021-07-13 15:32:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9115b35510eb103f42cc62afe08278a8 SHA-1: cbc311275f248e96142fec95300accc24c4d6101 SHA-256: 0d3b48d89140a9d41ea035fd5f7c6f3e3d3e7ddcbd00a1fcb3a7a2c559d67bfc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to distribute malicious content or manipulate search engine results. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier further support its malicious nature. While no scripts were explicitly extracted, the nature of the embedded URLs and the heuristic firings indicate a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7261

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://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/hntiq8i9ilcon5o2ukmojq0pa3/19931137832.pdf In PDF document text
    • https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/fcb9accc09ad31ec9b219078fdef2f48/90782256102.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609b79fe19d5f---vuvuxulagimiwoxarazamijag.pdfIn PDF document text
    • http://painttechvina.com/webroot/img/files/redapuvilefafapig.pdfIn PDF document text
    • http://pusheng168.com/uploadfiles/20210629163440.pdfIn PDF document text
    • http://kinel-hunter.ru/upfiles/file/lugazarugekafu.pdfIn PDF document text
    • https://daaeportrett.no/upload/file/dobagujobererapuzunizi.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d0acf70e92f---mogaxodaremeneligepu.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/8d2ad9520cdf8fe302d9c1dad88be651/fasodi.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/7bi0h8o63575qie5kok20fj062/79211578098.pdfIn PDF document text
    • http://abc-tel.ru/data/File/zesimunurumaruwezo.pdfIn PDF document text
    • http://dui-antidote.com/images/userfiles/file/14678523344.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/elb1rvrqnc0s6lik6ho671sk53/mekisidelebijonoxi.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160a5c2b65f167---54190153464.pdfIn PDF document text
    • http://rockhousemethod.com/ckfinder/userfiles/files/6844981134.pdfIn PDF document text
    • http://beloezoloto.ru/userfiles/file/giligalojiwazafowefe.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/009f4926f8c02c4f0acfa56922e060b4/nafewuwesupade.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/92526489081.pdfIn PDF document text
    • https://kar360.com/resimler/files/kotowirukas.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/4q74g754cmjrv330psfvj8gggu/vewevowemakizudukomu.pdfIn PDF document text
    • https://dodatnojamstvo.com/userfiles/file/35646856481.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=tom+clancy+chronological+orderPDF link annotation

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