Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 922208f5fedeb15a…

MALICIOUS

RTF / .DOC

77.1 KB Authoring application: Msftedit 5.41.15.1515
MD5: de5701e5bc47188501c2c57a90e96249 SHA-1: f28a037e9e22144a35fa14d0fbfd9ef9e8b52651 SHA-256: 922208f5fedeb15abe65643cd1db42800167d7f365f7ad0eabbf396dcfe847d3
260 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking T1027 Obfuscated Files or Information

The RTF document contains embedded OLE objects, including a Package object class and a PE header within hex data. ClamAV identified the file as Win.Trojan.Clicker-4017, indicating it's a trojan designed to perform unwanted actions, likely clicking on ads or similar malicious behavior. The presence of the PE header within the RTF strongly suggests the document is a dropper for a malicious executable.

Heuristics 6

  • PE header (with DOS stub) in hex data critical RTF_MZ_HEX
    Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
  • ClamAV: Win.Trojan.Clicker-4017 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Clicker-4017
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000000cf.bin
788dcf5de039eaa9783ac91b3f2d7aa4e038e3269d0ddbfbacd2e008ac5d91d4
rtf-objdata-decoded RTF \objdata at offset 0xCF 34628 bytes
Detection
ClamAV: Win.Trojan.Clicker-4017
Obfuscation or payload: unlikely