Malicious PDF — malware analysis report

Static analysis result for SHA-256 c09a98ed52246813…

MALICIOUS

PDF

68.3 KB Created: 2021-09-04 04:35:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 60c5e02ac565e760a30e87dbd7ddaed6 SHA-1: 41beda08e13c4649981e9f892b516f8af2cd3124 SHA-256: c09a98ed5224681335d385ceff9667926aee9f356367b6c07ae23e559ce20d16
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery through these links. The presence of 'utm_term_redirector=True' further supports the redirection aspect.

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://www.gurgy.net/ckfinder/userfiles/files/jomerezuwobilulanuwul.pdf In PDF document text
    • https://abofahed.com/userfiles/file/24760388578.pdfIn PDF document text
    • https://alhasooncorp.com/Files/files/lisinutobekitidekutarigi.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160b3e9298b151---manezubanekewunotil.pdfIn PDF document text
    • http://china-engine.net/ckfinder/userfiles/files/furigoze.pdfIn PDF document text
    • https://ecableapp.com/FCKeditor/FCKimgUpload/file/33453694108.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3f5a0258d---33899065918.pdfIn PDF document text
    • http://3wsystems.com/shipinc/userfiles/files/bupakaniveliw.pdfIn PDF document text
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/cf896285ed662732f6e7a4d2e29df335/norifo.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa65192cdc---xujazage.pdfIn PDF document text
    • http://tiramisu-o.com/yamituki-n/uploads/files/tilesinikumonorafofu.pdfIn PDF document text
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/3kktj7vr5nkskcq5oku87nhuvf/kagapivan.pdfIn PDF document text
    • http://kccmaul.com/files/files/69549416421.pdfIn PDF document text
    • https://stopserv.ru/files/file/8561511380.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/71lt7ob48d9sf46tralg7ha1r7/76856949405.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d78464e0257---gewawetofegenuku.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070a48966d9f---mademogubibu.pdfIn PDF document text
    • http://szkolaprywatnaleszno.pl/userfiles/file/nezodevojesebosaz.pdfIn PDF document text
    • http://tykhchem.com/upload/files/70690872696.pdfIn PDF document text
    • https://fminterativa.net/cms/plugins/ckfinder/userfiles/files/66751596395.pdfIn PDF document text
    • http://fc-junajted.com/upload/datoteke/dojogozejasujet.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1607212483a510---86305814893.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=2007+toyota+camry+wiring+diagram+pdfPDF link annotation

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