Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 79d68212bb5ee885…

MALICIOUS

RTF / .DOC

160.1 KB
MD5: a0cfbc0ab50ae4fafc03c74d503fccc7 SHA-1: 764720dea57418b25ef3dec8aa97dcd31994c64e SHA-256: 79d68212bb5ee8852ec0d7c6c8ab8b045ae22a8d247343f51d2defdd297d33de
141 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object that is triggered by an \objupdate command, indicating an attempt to exploit a vulnerability. The presence of OLE object data and the high-entropy carved artifact suggest that the embedded object is malicious and likely intended to execute code. No document body text was available for analysis, but the heuristics strongly point to a malicious OLE object exploit.

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_off0000134f.bin
67904db54ddf38154bc72098c426df3d7a62afafc9a81d9d2a470cb621adc7d3
rtf-objdata-decoded RTF \objdata at offset 0x134F 63553 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.94, consistent with packed or encrypted content.