Malicious PDF — malware analysis report

Static analysis result for SHA-256 589357258fad1a42…

MALICIOUS

PDF

67.8 KB Created: 2021-08-14 09:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ade9e7265700e7eec27bbab3c6390760 SHA-1: 24df5afdcd840b102254f16f193a9f90d2a05e43 SHA-256: 589357258fad1a4260a979fcb8877c9dda6c73ed7fefb723f01a2cabc34ae826
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The PDF structure and embedded links are indicative of a phishing campaign designed to exploit user trust.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8877

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://medvor.ru/uplcv?utm_term=python+snake+game+code+pdf PDF link annotation
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f49b69ddff---zibagatemifiwiroxibisim.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607e425315261---devijuwakabo.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610901d3e6727---96316667035.pdfIn PDF document text
    • http://ghhs1968.com/clients/5/57/5762190d0a265df614d1f295a7060a42/File/golilibexulovameku.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16087cd3644044---49412944454.pdfIn PDF document text
    • http://suacona.com/clients/16856/File/9713713075.pdfIn PDF document text
    • http://coutleelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/22107802875.pdfIn PDF document text
    • http://keitbg.com/images/files/fewisuwutujena.pdfIn PDF document text
    • http://fioredda.com/userfiles/files/29212294854.pdfIn PDF document text
    • http://greenbiotech.vn/uploads/userfiles/file/lutorubegu.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/rc3kren2r38sbcqaiovahclbpp/609839341.pdfIn PDF document text
    • https://bacninhonline.com/webroot/img/files/60288341486.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/53da85cdbfc9bbc5c79cbe1e3a8cb7c2/gawojimuxirinunel.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609c920f3ddf3---70992179352.pdfIn PDF document text
    • https://fainitelecommunication.com/public/editorfiles/file/37593202609.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/40788668616.pdfIn PDF document text
    • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/89625036825.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160982b762fc84---gorikigelumos.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf034939aa6---98879844249.pdfIn PDF document text
    • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607053fd1446c---gopokunalolu.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3235fa0d03---30579063841.pdfIn PDF document text
    • https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/a0bfd5c64f5120bfb1839cb889836dcd/58839783596.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609fae31c7089---41445192244.pdfIn PDF document text
    • https://madhubanindiancuisine.com/nbloom/fckuploads/file/72746144633.pdfIn PDF document text

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