Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 c6cfdd0c860632d5…

MALICIOUS

RTF / .DOC

364.0 KB
MD5: e3046a7a8a083c674954c0e855bf93ed SHA-1: e86fcb06c7095796ce2a41fc1a5df5fb33a2b973 SHA-256: c6cfdd0c860632d52898b431286b996d5839c0d8f60af8f38fd32b02661bebfc
178 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains embedded OLE objects, with heuristics indicating that \objupdate forces OLE activation. This suggests the document is designed to exploit OLE object handling vulnerabilities to execute embedded content. The high entropy of the decoded OLE object further supports the presence of malicious code. No document body or scripts were extracted, limiting further analysis of the specific payload.

Heuristics 5

  • 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 2 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • 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_off00001d2f.bin
73fc7f9e6b5a529d9b3653e4b979926f7d2bf945f16e1d98ffa6b6075976df9a
rtf-objdata-decoded RTF \objdata at offset 0x1D2F 145977 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.97, consistent with packed or encrypted content.