Malicious PDF — malware analysis report

Static analysis result for SHA-256 7210cb0950316cbc…

MALICIOUS

PDF

64.3 KB Created: 2021-09-02 01:19:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: b049d99c877cd6cc278844156b7d5713 SHA-1: f810c4d8dc919bd57678fe8531a1a2ccacda95d8 SHA-256: 7210cb0950316cbc4c21b9be48b99a62bc6b0a1a5233b976fa20f666ce4a6f04
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS upload storage or disposable hosting. These links likely serve as a link farm to redirect users to malicious sites for phishing or malware delivery. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6239

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f1fd9e661533fa70eba723720a2a365d/4530423920.pdf In PDF document text
    • https://imagebuzz.net/ckfinder/userfiles/files/pesir.pdfIn PDF document text
    • http://quickvideo.nl/userfiles/file/ketajasetesiwuxutu.pdfIn PDF document text
    • http://stcforanebanglore.smcim.com/www/js/ckfinder/userfiles/files/xidaluvoduxani.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d536e93d470---9019755545.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088dc4515972---tuzimuledorakot.pdfIn PDF document text
    • https://numen-wow.com/userfiles/cloud//files/xerojuvirivapupizasogowam.pdfIn PDF document text
    • http://pneusmarene.it/images/file/xinitejenewenolaziz.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/11r76v795gog2dtv4mo7m41c15/46790253786.pdfIn PDF document text
    • http://haohanlegend.com/Uploadfiles/files/radumixulegimawagojubad.pdfIn PDF document text
    • http://wallacewilliamsfamilyreunion.net/clients/6/66/662ca4338cd1fa41fa93b88222973dc6/File/dokusuxupowi.pdfIn PDF document text
    • http://dentalcenterstudio.it/userfiles/files/duvagux.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c105f378653---86080844750.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/96813a32890e52fb5a789719b1da3509/veloxifidopunikaki.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081f5103229a---xosugufixogikar.pdfIn PDF document text
    • https://10s317.com/uploads/files/202108271655328910.pdfIn PDF document text
    • https://manorhair.com/uploads/files/202108171421514370.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606d973436e11---14034472390.pdfIn PDF document text
    • http://mmbc.cz/_data/user_files/file/forexejivuver.pdfIn PDF document text
    • https://ost-fogging.com/upload/files/63646922372.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/fb135667e263dcd081e7120849c6467b/36156369679.pdfIn PDF document text
    • http://westpakusa.com/phpsites/vertical_living/uploads/file/34231572048.pdfIn PDF document text
    • https://termofriz.rs//files/tikuv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=madness+project+nexus+free+playPDF link annotation

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