Malicious PDF — malware analysis report

Static analysis result for SHA-256 da23633ebb30e7ab…

MALICIOUS

PDF

53.0 KB Created: 2021-09-12 18:21:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 718da761302f6cd5f86f0351652c1c07 SHA-1: 8bd0ce9374a5a8092ba852ab2bbc3fc480e2c015 SHA-256: da23633ebb30e7aba968024c87c52c07c72e4357df14de5d5ac052716d02833f
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and numerous external URIs, many of which are part of a link farm designed to obscure the true destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded JavaScript is likely used to facilitate the download or execution of a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6942

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://reklamaopole.pl/userfiles/file/jekufebuzunipuduf.pdf In PDF document text
    • http://ccforum.kr/uploads/file/1631342734.pdfIn PDF document text
    • https://towa-aaa.jp/userfiles/file/40781893943.pdfIn PDF document text
    • http://csc-021.com/userfiles/file/20210912162302_9tyamm.pdfIn PDF document text
    • https://harteron.ee/userfiles/file/dedovokefetisokuze.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/161363371d24c4---zajidi.pdfIn PDF document text
    • http://timebank.ru/sites/default/files/photos/pagefile/tilupivuzodubajazaz.pdfIn PDF document text
    • https://testpensija.bankai.lv/ckfinder/userfiles/files/41898554630.pdfIn PDF document text
    • http://eichler-kammerer.de/muvobukimuxerotub.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613109afd701c---72476870733.pdfIn PDF document text
    • http://chelseafoodmart.com/uploads/files/58686378690.pdfIn PDF document text
    • http://bestofbeer.ru/ckfinder/userfiles/files/48500332061.pdfIn PDF document text
    • http://proximeo.com/ckfinder/userfiles/files/napasumuzido.pdfIn PDF document text
    • http://paintmaster.hu/js/ckfinder/userfiles/files/vivejiraleguvobobinum.pdfIn PDF document text
    • https://bandotrading.it/uploads/file/14658079041.pdfIn PDF document text
    • http://kemmurad.com/webroot/img/files/97371622977.pdfIn PDF document text
    • http://my-hustle.net/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/bonogagige.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613b6ba7ce940---51505554585.pdfIn PDF document text
    • http://adbrf.com/files/fckeditor/file/84575331061323b48784a7.pdfIn PDF document text
    • http://laulumaja.fi/ckfinder/userfiles/files/18053787083.pdfIn PDF document text
    • https://pmms-online.com/assets/file/noliledimanowibegadera.pdfIn PDF document text
    • https://www.edm-medical.net/ckfinder/userfiles/files/lenimatokiwegirasamoji.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=download+book+by+isbnPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.