Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c6ccf18d7965a0…

MALICIOUS

PDF

61.0 KB Created: 2021-09-24 11:08:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 315aa1481e07e219374c621ca7508069 SHA-1: b67059edd41a099513ef3c0f75ba9412829a4306 SHA-256: 68c6ccf18d7965a0cb36a2435e1ce30d689bbc6f51898d978ef7a7f4efaceaaf
124 Risk Score

Malware Insights

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

The sample is identified as a malicious PDF by ClamAV, indicating it's likely a phishing or trojan delivery mechanism. It contains a link farm pointing to multiple compromised websites, suggesting an attempt to redirect users to malicious content or downloads. The presence of numerous PDF links on disposable hosting further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4857

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
  • 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://gifarlcm.com/upfiles/editor/files/zaderudoraridaki.pdf In PDF document text
    • http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/tajudi.pdfIn PDF document text
    • https://suacuachuyennghiep.com/uploads/files/jizerimekafitovudev.pdfIn PDF document text
    • http://marmaraisg.com/images_upload/files/98074761929.pdfIn PDF document text
    • http://ymmicro.com/files/files/6445239707.pdfIn PDF document text
    • http://jowinbio.com/upload/files/202109161957165142.pdfIn PDF document text
    • http://gandolfiarchitetti.com/userfiles/files/18428545720.pdfIn PDF document text
    • http://montpellier-businessplan.eu/mbp/upload/images/images/upload/ckfinder/56497891889.pdfIn PDF document text
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1613365a538975---38659584211.pdfIn PDF document text
    • http://coomargroup.com/ckfinder/userfiles/files/dazazamolutiriwilexezejo.pdfIn PDF document text
    • https://cungcapthitdetuoi.com/app/webroot/files/images/pages/files/bogabimuxubimapuwazak.pdfIn PDF document text
    • http://memsports.com.br/admin/libs/ckeditor/ckfinder/files/48262162077.pdfIn PDF document text
    • http://kancelaria-perfect.pl/app/webroot/media/files/70372511754.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613c1ff1a98f6---15935380214.pdfIn PDF document text
    • http://jimsclub.net/new/board/img_tinfo/file/20210916015802.pdfIn PDF document text
    • http://snbedu.com/uploadfile/file///2021091522252977.pdfIn PDF document text
    • https://farsiherbal.com/cache/fck_files/file/nawopaxafotanuwul.pdfIn PDF document text
    • http://slxiang.com/v15/Upload/file/202196622234141.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139c5ee4d775---53605674794.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613a93b0b64f4---bisupusek.pdfIn PDF document text
    • http://hstairan.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/famewako.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/t2rco6eg5ro4kps3qgd1n5cupg/waxemotaxativeko.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/161315bd9e1244---56712076250.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=cooking+city+modPDF link annotation

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