Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c2f4ad0bef00f23…

MALICIOUS

PDF

54.0 KB Created: 2021-09-16 01:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 6e7c2c0fd49fca5b47059c0e9d3ca28f SHA-1: 52d541f937a3f0e7ca7977c74ab9de3f020b4619 SHA-256: 0c2f4ad0bef00f233d9e06cbc66c97bba6542484e8212c592b2aeb55fb35395f
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature, indicating a phishing attempt. It functions as a link farm, hosting numerous URLs that point to compromised CMS uploads and disposable hosting, likely to redirect users to malicious content or phishing sites. The presence of 'utm_term' parameters in some URLs suggests an attempt to track user engagement with the lures.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4912

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://archism.ru/uplcv?utm_term=21+full+movie+123 PDF link annotation
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/0dae98fa1caaf9e268c95e97517ea580/69919649063.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16139770b7f60c---sasivib.pdfIn PDF document text
    • http://immobilieninvestors.de/userfiles/file/wawazesi.pdfIn PDF document text
    • https://www.vita-organic.eu/admin/ckfinder/userfiles/files/73165174217.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/f6a84c47f84aaa92f113e6e696799adb/44149731344.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/64b69ae36cb3bc0affa17afc383ad5b8/zurelatepijafokeretison.pdfIn PDF document text
    • http://www.rodnolespropertymanagement.com/siteuploads/editorimg/file/72583537004.pdfIn PDF document text
    • http://amindoost.ir/images/upload/files/zusebuvula.pdfIn PDF document text
    • https://www.agencesramos.com/ckfinder/userfiles/files/parewagenaf.pdfIn PDF document text
    • https://zebcom.in/userfiles/file/51902892391.pdfIn PDF document text
    • http://bnblspecialities.com/userfiles/files/vumukiwigagerodiv.pdfIn PDF document text
    • http://www.ecrivains-consult.fr/easyonline/ckfinder/userfiles/files/naronuburepewo.pdfIn PDF document text
    • http://bacvietexpress.com/upload/userfiles/files/90716293295.pdfIn PDF document text
    • http://cbstav.cz/file/vuzebipuk.pdfIn PDF document text
    • http://master-br.ru/img/file/bepikop.pdfIn PDF document text
    • http://controldellaves.com/app/webroot/arxius/file/gokumujinukid.pdfIn PDF document text
    • http://csc-0898.com/userfiles/file/20210903154810_eeatrs.pdfIn PDF document text
    • https://shoppingplanet.ro/ckfinder/userfiles/files/dopofologepokofesavojuvip.pdfIn PDF document text
    • https://nieruchomosciturystyczne.eu/files/file/26809720628.pdfIn PDF document text
    • http://folientastaturen.pl/_data/file/jabarupadimigadesovewuxix.pdfIn PDF document text
    • http://klubalfa.org/img/userfiles/file/85666448345.pdfIn PDF document text
    • http://cmtdental.com/upload/ckimg/files/tusige.pdfIn PDF document text
    • https://marlin-aquarium.ru/ckfinder/userfiles/files/famokix.pdfIn PDF document text
    • http://chapaconoticias.com/assets/ckfinder/core/connector/php/uploads/files/79351266712.pdfIn PDF document text
    • http://youandisagenix.com/ckfinder/userfiles/files/87853500660.pdfIn PDF document text

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