Malicious PDF — malware analysis report

Static analysis result for SHA-256 192a91f414f228b7…

MALICIOUS

PDF

47.0 KB Created: 2021-09-06 20:21:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 98ac804b4ac123a9b6da76149e40bf4a SHA-1: 687d74cee7e1bbe5c62db8be84ff5d6399987dbf SHA-256: 192a91f414f228b7c4cfa6f90dbf854c52243fa1eb684df8f2192228cb1c6329
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farms strongly suggests an attempt to lead users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7355

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://ketchas.ru/uplcv?utm_term=consolidate+two+worksheets+in+excel PDF link annotation
    • https://eastmanllc.net/ckfinder/userfiles/files/pikesu.pdfIn PDF document text
    • http://wannawwannie.pl/userfiles/file/23579445521.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/mph2u6k0d0mcfoom3qabbgk2j6/72804536679.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc3ce30e00---jewimamiwizutadinibenilop.pdfIn PDF document text
    • http://geodez.com/pliki/file/pitexibevomogu.pdfIn PDF document text
    • http://bwlpsalisbury.com/uploads/files/joxamupukagenelumefej.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/nd29fshh00124qi83cpaktfg41/safezamisokaboxojiz.pdfIn PDF document text
    • http://nikacarpet.com/My_Project/Hamishe_bahar/ahar_img/files/64315340267.pdfIn PDF document text
    • http://www.ctnphrae.com/ckfinder/userfiles/files/muzosazetegaxilejazim.pdfIn PDF document text
    • https://fruitssupplier.com/app/webroot/img/files/xumanevekebatovub.pdfIn PDF document text
    • http://drironcat.com/images/file/18947556943.pdfIn PDF document text
    • https://thai-airpark.com/ckfinder/userfiles/files/xiwowigabibudekesuniwulo.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/076ddd9fbc2a3f16a9b2a32d4433a228/11846594902.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/311930036735.pdfIn PDF document text
    • http://eachfun.com/ckfinder/userfiles/site_eachfun_com/files/80045036807.pdfIn PDF document text
    • http://rabotatver.ru/userfiles/admin/kuvij.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/sopurowinapi.pdfIn PDF document text
    • http://au-zlato.sk/upload/files/98813768087.pdfIn PDF document text
    • https://aquatrustfina.com/userfiles/file/rizedo.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080b115a4a60---nozobutetoruwejukox.pdfIn PDF document text
    • https://wasael.com/userfiles/file/14259278641.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/icaoaub7na0c7ugemhtkm3i1ha/niwowupajebiwakuwu.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f1ac116dd4b---5580097137.pdfIn PDF document text
    • https://kingcarmotorista.net/uploads/files/8869924958.pdfIn PDF document text
    • http://coytex.net/ckfinder/userfiles/files/wilekuxudidokazavizo.pdfIn PDF document text

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