Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a52333d066af16…

MALICIOUS

PDF

69.3 KB Created: 2021-07-19 23:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: cf01bf30d7ec3e8a322352e0dd25be88 SHA-1: b115a30909fd3a33d7c39d9bc57a3471be2ed6d4 SHA-256: 24a52333d066af1653bb0daa79ab61f5bb29589b561047dcbd6f1e7a5ac7a2b9
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as a malicious PDF by ClamAV, indicating it's designed to exploit vulnerabilities or deliver malicious content. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm or phishing lure. The presence of external URIs and a link farm heuristic strongly indicates an attempt to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4988

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 http://lycee-elm.org/userfiles/file/5025038209.pdf In PDF document text
    • http://autoshiftbid.com/fckeditor/userfiles/file/5535729538.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/fuvagijivegup.pdfIn PDF document text
    • http://bunny888.com/ckfinder/userfiles/files/walirorulumew.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4c8658a5af---sutosuw.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/9608b87c2e09a59149e0227fa33946aa/sekimewepizadoxajol.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608adf0c8dc01---fodawuzukegewukovutureto.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160897cf91ad69---37587842928.pdfIn PDF document text
    • http://toshiteriyakiburien.com/uploads/files/nusazufejilu.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16079a67de336b---7689130817.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5112d0c361---dofojumizumoru.pdfIn PDF document text
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/suguxole.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb20741c98---fimamukimusomi.pdfIn PDF document text
    • http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608034838aeca---85181205199.pdfIn PDF document text
    • http://easykart.store/userfiles/file/xazutepojowuxogu.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e390d2d39f1---78554958013.pdfIn PDF document text
    • https://inverpalmas.com/aym_image/files/84382971464.pdfIn PDF document text
    • http://vejwun.cz/images/25957739045.pdfIn PDF document text
    • http://findmecakes.com/userfiles/files/72730106803.pdfIn PDF document text
    • http://emilymillerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/67811609566.pdfIn PDF document text
    • https://nutricount.cz/UserFiles/File/dufuvasiketuk.pdfIn PDF document text
    • http://ricarda-allegra.de/userfiles/file/wupidekujage.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160723e4a2f270---xiruzamog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=squatters+rights+are+stupidPDF link annotation

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