Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ecb8acbff0554f…

MALICIOUS

PDF

50.6 KB Created: 2020-12-15 17:53:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 299c6cc3da259f76c11707f17c225d60 SHA-1: a257431d1a4cffd08d14c5fb1f95d7d99ed1c583 SHA-256: 93ecb8acbff0554f78d2227c2e10b8dde7338db6e3cd1d0b66d4e5702d831f64
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to educational materials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6742

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/aws?utm_term=printable+unit+circle+worksheet
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5fb61c3da3d67.pdf
    • https://s3.amazonaws.com/tetazino/kefovumewe.pdf
    • https://uploads.strikinglycdn.com/files/17332706-510e-4760-a962-42b53f662549/97172986929.pdf
    • https://uploads.strikinglycdn.com/files/e412eb0a-e331-4cd2-a978-2b1fc1d6c5fd/kekalojifesirevomewanowi.pdf
    • https://s3.amazonaws.com/jolunenafobuw/nexewogezaxelesoraba.pdf
    • https://static1.squarespace.com/static/5fc5174de5c7695ca9b695f8/t/5fcbaac064036b6143926ecb/1607183046956/fish_live_wallpaper_for_android_phone.pdf
    • https://s3.amazonaws.com/jiwisi/esp8266mod_doit._am_datasheet.pdf
    • https://s3.amazonaws.com/bejeseja/c_template_class_constructor_example.pdf
    • https://s3.amazonaws.com/bifadiwuwileji/kufosuxijuru.pdf
    • https://static1.squarespace.com/static/5fc37266abaecd331832648e/t/5fd05d9412264b5dfdca7a20/1607490964937/candy_crush_jelly_saga_jugar_gratis_online.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0464edabee7b44084a7d/1606222950086/air_transport_international_flight_schedule.pdf