Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 0323f4cd1ff9015e…

MALICIOUS

RTF / .DOC

160.1 KB
MD5: 068a42f1620d92bc3beae725a26bfc34 SHA-1: ba076802c7b9f3a7092280a341d0e24fcdf7bd4c SHA-256: 0323f4cd1ff9015e23162a134070a51fcdef762b192850ea61b712c54d9ee4a4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF document contains OLE object data and uses an \objupdate directive, indicating an attempt to exploit OLE object activation. This suggests the file is designed to execute arbitrary code when opened, likely delivered via spearphishing. The embedded OLE object, objdata_00_off00000e12.bin, is the primary artifact of this exploit.

Heuristics 4

  • Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM
    RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000e12.bin
ed0f5964d41a2dc81a071e921ad8ff0ef7e0eaa383bbe2ddfdd17c67d81beefa
rtf-objdata-decoded RTF \objdata at offset 0xE12 64063 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.93, consistent with packed or encrypted content.