Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 e0bdffcbc8ca3495…

MALICIOUS

RTF / .DOC

348.4 KB
MD5: 820888ce42bcc1d17a7a639753e1ce96 SHA-1: a968502300f41aa462dcf12ae3483f47c38722be SHA-256: e0bdffcbc8ca349588041bd25312d2480bf4fe1e4c800b0686a3922c16d1ae38
141 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

The RTF file contains embedded OLE object data which is triggered for activation via \objupdate. This indicates an attempt to execute embedded code. The high entropy of the carved artifact suggests it may be a packed or obfuscated payload. While no specific script was extracted, the heuristics strongly suggest a malicious OLE object execution, likely leading to a second-stage download and execution.

Heuristics 4

  • \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
  • 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_off00001aef.bin
5db482b256b908eb34fd490f1894f1a82bc619c1803e13ea67df27f5a01d284f
rtf-objdata-decoded RTF \objdata at offset 0x1AEF 63549 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.94, consistent with packed or encrypted content.