Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c95b9deeab79305…

MALICIOUS

PDF

43.2 KB Created: 2021-09-29 13:24:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 1bda4e413b9b97d6b732d58aa8de3082 SHA-1: 4a8bd3fb4a6f67ea196f59ab00879125bdaf25c4 SHA-256: 3c95b9deeab79305557f195892ce44b0818716854502cff49cac3babe1439ae4
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous external links, many pointing to compromised websites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7916

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://huntic.ru/uplcv?utm_term=coin+dozer+hack+2020 PDF link annotation
    • http://goldenstarhotel.vn/images/uploads/files/jekavu.pdfIn PDF document text
    • https://jmbarrenetxea.soinuenea.eus/files/galeria/files/47367087008.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/h0ftto4d7kreqodc4t1jf3l0o7/zosufozin.pdfIn PDF document text
    • https://vatlieuchongnong.baohohoanglong.com/userfiles/file/52128228187.pdfIn PDF document text
    • https://istanbularicilikfestivali.com/upload/ckfinder/files/tarosiforaf.pdfIn PDF document text
    • http://abovomedia.hu/_user/file/83418394990.pdfIn PDF document text
    • http://fxlcd.com/upload/file/lejazifewojigoxa.pdfIn PDF document text
    • http://bkmarine.net/ckfinder/userfiles/files/1630516463.pdfIn PDF document text
    • http://seamacros.com/upload/file/gomujanajajofajeto.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16141bb303bb86---xegajujojo.pdfIn PDF document text
    • http://sindikat777.ru/ckeditor/ckfinder/core/connector/php/uploads/files/bigijevoxuxozopes.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16135246f0baab---17195743638.pdfIn PDF document text
    • https://hsse.hssanesteban.cl/files/jezibo.pdfIn PDF document text
    • http://snsi.jp/image/news_file/97386443286.pdfIn PDF document text
    • https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/jabop.pdfIn PDF document text
    • http://elrey-uslugi.ru/media/file/76796634807.pdfIn PDF document text
    • https://sadhankendra.org/erc/media/56902447624.pdfIn PDF document text
    • http://pappteam.hu/userfiles/file/sixufuwedej.pdfIn PDF document text
    • http://manchetenewsms.com.br/ckfinder/userfiles/files/50279222523.pdfIn PDF document text
    • http://teakdeck.pl/files/file/bajewilusavufiz.pdfIn PDF document text
    • http://atdawnwelift.com/userfiles/file/58977086979.pdfIn PDF document text
    • https://skatrip.com/basefile/skatripcom/files/4055957562.pdfIn PDF document text
    • https://ddnepal.com/assets/userfiles/files/tubefeduz.pdfIn PDF document text
    • https://milosislandrooms.gr/userfiles/file/2476070736.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/69In PDF document text

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