Malicious PDF — malware analysis report

Static analysis result for SHA-256 42ca836bd7f26d11…

MALICIOUS

PDF

67.8 KB Created: 2021-10-08 01:35:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 19a800dddbfec1027ee6de20a2a2a59f SHA-1: b28fd0c3d10727f1695373c1611efe192f213fa6 SHA-256: 42ca836bd7f26d1111c1565937769310ae6036465f0b101b47cb7c85df37e53c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to numerous websites, many hosted on compromised CMS platforms. The ML classifier and ClamAV detection indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the structure and heuristic firings suggest the PDF is designed to lure users to external, potentially malicious, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6947

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://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/sexaruwuselulemolitiko.pdf In PDF document text
    • http://nhagiatxanh.com/public/default/ckeditor/files/50217668483.pdfIn PDF document text
    • http://bagliodeimille.it/userfiles/files/38631415524.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/du8aocn31mqb4ebg1jodia1g2e/gagin.pdfIn PDF document text
    • http://sherwoodchambergolf.com/ckfinder/userfiles/files/vozidomebafituvetimina.pdfIn PDF document text
    • https://bloomlight.pl/_bloom/file/kividozidinisi.pdfIn PDF document text
    • http://xn--9i1b14lwsg1seumdzsx.com/upload/fckeditor/file/jisifimina.pdfIn PDF document text
    • http://asesoriazabalburu.org/azaba/files/file/rekanawulu.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16152e6aee2166---gikalamamuzaz.pdfIn PDF document text
    • https://bipalisdemo.dashindonesia.com/userfiles/files/tinemunenekiludop.pdfIn PDF document text
    • https://thietbidiensino.vn/media/ftp/file/mujirum.pdfIn PDF document text
    • http://xn--2osv9pt2jfpt.com/uploadfiles/files/kuwiso.pdfIn PDF document text
    • https://casaalu.com/luutru/files/60304780772.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613880c23aff6---7861413887.pdfIn PDF document text
    • http://orvositudasbazis.eu/images/upload/file/88264228334.pdfIn PDF document text
    • http://ruihuitax.com/files/file/dusadupepepuzewubukuxi.pdfIn PDF document text
    • http://yeosingol.com/FileData/ckfinder/files/20210907_39E07ADD50369D23.pdfIn PDF document text
    • https://www.mppoa.cloudlinesystems.com/assets/ckfinder/userfiles/files/82054379174.pdfIn PDF document text
    • http://limobebe.com/userfiles/files/5522629523.pdfIn PDF document text
    • http://isdoor.ru/uploads/files/fidoliwijirisevitarujus.pdfIn PDF document text
    • https://revive.fashion/upload/files/jofozidaloxukirajozo.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/161377d00830bf---70684971976.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=out+of+pocket+expenses+insurancePDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.