Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 5d63c394cf943e5d…

MALICIOUS

RTF / .DOC

346.0 KB
MD5: 7291fdf92c4bb0f64c86e6907ddc2980 SHA-1: 07df326c8f88d39fa5e3273ba2624ff5a2eb8937 SHA-256: 5d63c394cf943e5d77c8b7e3c8905ff98042c9743936d6333f9dacdc6176d926
102 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object, indicated by the RTF_OBJDATA and RTF_OLE10NATIVE_STREAM heuristics. The RTF_OBJUPDATE heuristic suggests that this object is automatically activated upon opening the document. This mechanism is commonly used to execute malicious code embedded within the OLE object, which was extracted as objdata_00_off000006f0.bin.

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_off000006f0.bin
ed58a32805c6037701ea01d6c977dd7092320643139d5ce60d3d18707e7c3d49
rtf-objdata-decoded RTF \objdata at offset 0x6F0 64055 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.93, consistent with packed or encrypted content.