Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7b3ef466c1fca5b…

MALICIOUS

PDF

47.7 KB Created: 2021-09-06 16:00:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a3886d006fa2508822da58754864d3da SHA-1: 9732e1da3d2877e5d770c09197a0ef3e58de7ab7 SHA-256: f7b3ef466c1fca5b8230ebe33349f04b3382c2412a49b65372de9b377f2b8420
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous embedded URLs that point to various domains, many of which are hosted on compromised CMS uploads or disposable hosting. The primary purpose appears to be directing users to external sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7790

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://codemessaging.net/ckfinder/userfiles/files/27153544007.pdf In PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/2ekh1c98ilgjjlpigusg21ioe1/vedexilot.pdfIn PDF document text
    • https://mytopics.it/uploads/file/sogiluki.pdfIn PDF document text
    • http://zuche0551.com/upload/file/kawalijiwani.pdfIn PDF document text
    • http://budoprojekt.eu/obrazy/file/6140458913.pdfIn PDF document text
    • http://www.greenfield-sustainability.com/images/files/getobe.pdfIn PDF document text
    • https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/21219595351.pdfIn PDF document text
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.net/ckfinder/userfiles/files/4610804724.pdfIn PDF document text
    • http://embeddedhr.com/ckfinder/userfiles/files/ziruperunuxawow.pdfIn PDF document text
    • http://indecomavo.pl/inc/52078183475.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086bfe99e7ad---86378778611.pdfIn PDF document text
    • https://etre-cheval.fr/Applications/MAMP/htdocs/etre%20cheval/news_pix/file/86365404221.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc78f35f078---tobilaremas.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/961c7a5158f56509a554f73de3a3689a/rukoguwibe.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/0cebe3cc2f01efa618584421ddd4930d/6074773108.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad3aaf4caea---gepixefitoxil.pdfIn PDF document text
    • http://oreade-breche.fr/userfiles/file/40141963963.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c9788ae1f0---13216830899.pdfIn PDF document text
    • https://hamasataccessories.com/userfiles/files/23555780954.pdfIn PDF document text
    • http://sakurahoaanhdao.com/webroot/img/files/kokuxedagi.pdfIn PDF document text
    • https://prokoncept.hu/admin/blogfck/image/file/liwigodirumumibebivoja.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=word+roots+pdfPDF link annotation
    • http://e1pl2.nazwa.pl/busy/fotki/file/14330566033.pdfIn PDF document text

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