Malicious RTF — malware analysis report

Static analysis result for SHA-256 eb01b248bad9c125…

MALICIOUS

RTF

370.1 KB
MD5: 9b75009d63bb9e2868eaaa1f0cf56d4a SHA-1: 8583a4ba4ba08b2f133462caa6ccf1f0b6cf37b5 SHA-256: eb01b248bad9c12594ba6da0bfdfe07214d897d4e585bdf908ebb9857b013ace
62 Risk Score

Malware Insights

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

The RTF document contains embedded OLE object data, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this embedded object is designed to be activated, likely to execute malicious code. The presence of a suspicious extracted artifact, objdata_00_off00001d88.bin, further supports this. The exact payload and delivery mechanism are not fully discernible from the provided evidence, leading to an unknown family classification and a moderate confidence score.

Heuristics 3

  • \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_off00001d88.bin
f046d7527cd662738246fd759e1df364b3126aa560ef172deead8836e423e43d
rtf-objdata-decoded RTF \objdata at offset 0x1D88 185638 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.