Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8930566ebcd4d44…

MALICIOUS

PDF

37.0 KB Created: 2021-09-06 01:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b226d71d73e10353f536c9882adcc5ce SHA-1: e53c445f850aa7fbc71ac9295dad15695595e851 SHA-256: e8930566ebcd4d44f76a0d43f10941105aa6afed92153f62d646559fd5a38505
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ClamAV and an ML classifier. It employs an image-only lure, a common tactic for phishing, to entice users to click on an embedded URL. The primary URL, https://irlanc.ru/uplcv, is likely used to redirect the user to a malicious site for credential harvesting or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7016

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://irlanc.ru/uplcv?utm_term=oxford+solutions+elementary+podr%C4%99cznik+pdf PDF link annotation
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cbdddbce58---mororafifufubomer.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.fr/userfiles/file/ruditotilabovikew.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ca5aeea4910---31013451375.pdfIn PDF document text
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/giwenele.pdfIn PDF document text
    • http://xinyaoqiye.com/upload_fck/file/2021-8-1/20210801150945392320.pdfIn PDF document text
    • http://pensjonatagat.pl/userfiles/file/38925933228.pdfIn PDF document text

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