Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f679b24ba38ddec…

MALICIOUS

PDF

64.0 KB Created: 2021-09-01 10:49:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 63e9a6d79d9562fb4f0d359e6d3bf2dc SHA-1: cc8621771b0f5bffaf28caa028a12b4de8cdadff SHA-256: 4f679b24ba38ddec33c660bc16c44053a6cdae868b039b3e4bd9bc92e3594090
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9593

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://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed353f2ca5---71455276076.pdf In PDF document text
    • http://thechitay.com/uploads/userfiles/file/teluvagig.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/65219307044.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d893320f44---refulupedonuzawutiwiva.pdfIn PDF document text
    • http://kxnjl.com/userfiles/files/nivujefuj.pdfIn PDF document text
    • http://spbmedax.ru/sites/default/files/uploads/zabapep.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdddbb02b0a---lojaretibedezobu.pdfIn PDF document text
    • http://logansport1971.com/clients/4/42/424235dfd0fdcd2d3cc2afd1e16bb83e/File/wilexajezek.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607505decd250---36869665033.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/88261748228.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1609f283225a69---ligakumex.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160d2ece1b3453---zefikevexanuvibopedoma.pdfIn PDF document text
    • http://cherishedmomentphotos.com/clients/8/84/84fe84b553acfcd191e166b7401b6f02/File/lobipidaxurenonajikix.pdfIn PDF document text
    • http://gdgom.com/upload/file/210615045500289960lkofah2tku85.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6746c217a---72257852111.pdfIn PDF document text
    • http://chanakol.com/ckfinder/userfiles/files/rivaxuririnosani.pdfIn PDF document text
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/351715428fe04cfa79b8fa6e0c3182a8/gabuwuzibakowoziwanuwonus.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/ae4ee14b8818386bb0901e7ad643d8d5/kalemumilorebos.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/wuvigevupavataluluneli.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/49rc2e1u7buiuo45ebi1qlh5k7/29524413676.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/senolo.pdfIn PDF document text
    • https://peilimineko.com/userfiles/file/jiligosilusubimewuvuxu.pdfIn PDF document text
    • http://geoman.cz/data/file/50118506822.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=high+and+low+frequency+wordsPDF link annotation

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