Malicious PDF — malware analysis report

Static analysis result for SHA-256 40e91c23b9d74223…

MALICIOUS

PDF

137.6 KB Created: 2019-12-09 10:12:52 -04:00 Authoring application: $à¾j/Ž'\ÍÀ~žÄÜÛ cŸõ¯©s¼Û¢¿&›‘ë¹ (via õylàøìø˜Üv[oè@h¾\õZѼÎ)‡y) First seen: 2021-09-29
MD5: 8fe8eb667d57c0cc8a19ea03c8b1bd40 SHA-1: e847aa1266fec09130f278af5f4718a248610aa2 SHA-256: 40e91c23b9d742239b90d253430a2b94240b1519f7c58eccd06ef3a1fa698178
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as an image-only lure, a common tactic to trick users into clicking on what appears to be a screenshot but is actually a clickable element. The embedded URL, https://bit.ly/3yYsm2f, is likely the next stage of the attack, potentially leading to a phishing page or malware download. The heuristic firings strongly indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2818

Heuristics 3

  • Image-only PDF lure links through URL shortener high PDF_IMAGE_LURE_SHORTENER_LINK
    PDF is image-heavy with little real text and its clickable action points to a URL shortener. This is a high-confidence credential-phishing carrier shape: the visible page is a screenshot-like prompt while the destination is hidden behind redirect infrastructure.
  • 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 137 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://bit.ly/3yYsm2f In PDF document text