Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5a6a2c161e66c54…

MALICIOUS

PDF

62.4 KB Created: 2021-08-25 10:16:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 7edaa7a7bfd17d68ecd0a4e0561226fb SHA-1: 8f6adf80a348c9e1f891cf5bd2b687c72bdd3ce8 SHA-256: a5a6a2c161e66c547aa8d00990eaf24cc19be9cf1b69331cfa86db1b77e6cbb6
154 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to external resources. Several of these URLs are hosted on compromised CMS upload directories, indicating a potential distribution point for malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9854

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://pistant.ru/uplcv?utm_term=how+long+flight+from+vancouver+to+hawaii PDF link annotation
    • http://peaceinsrilanka.lk/userfiles/file/23818756513.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e80abb465---56691475775.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/85926954919.pdfIn PDF document text
    • http://marcobernini.it/userfiles/files/fabedudu.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160730f477511e---zupap.pdfIn PDF document text
    • https://innovaciones-plasticas.com/imagenes_cont/sitio/documentos/8267818979.pdfIn PDF document text
    • https://tenutaedone.com/filesUploads/file/90031412410.pdfIn PDF document text
    • http://worthingtonpark101.com/userimages/58289089188.pdfIn PDF document text
    • http://fine-trading-knotwork.de/uploads/media/zajofetowemiwoxazebek.pdfIn PDF document text
    • http://raiders71.com/clients/4/41/4134020f2f298c111575624a380fabfc/File/jebaxefiw.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/c0814dee1b831b924fdfea8635109b9b/moluko.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/xefebasunowaraguzurup.pdfIn PDF document text
    • https://myparrotfood.com/user_files/files/37937648584.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/20935722124.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1610a34c00ed7c---mekewaxaboribuvujinarug.pdfIn PDF document text
    • https://kodcomputers.ro/2664/uploads/dubenoxinap.pdfIn PDF document text
    • http://rockbond-aac.com/id-admin/fckImages/file/11446394074.pdfIn PDF document text
    • http://campbellelectronics.com/uploads/32688654852.pdfIn PDF document text
    • http://mai-colle.jp/userfiles/file/vefozasurifoguwevuz.pdfIn PDF document text
    • https://rjpexport.com/files/17687158516.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16111bdc01fa2b---fitoragekenemazoma.pdfIn PDF document text
    • http://hnfhdc.com/UpLoadFile/2021073017150326712.pdfIn PDF document text

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