Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 9b3fc8083347fd5c…

MALICIOUS

RTF / .DOC

103.3 KB
MD5: 4cd16805ac1dee8e246f32c695b56788 SHA-1: 182f66c623c10964a81060e199fd8b00182515d7 SHA-256: 9b3fc8083347fd5cea258502c5e42cbd7f56fe4bb9df0e3693ac145db2775078
100 Risk Score

Malware Insights

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

The file is an RTF document containing OLE objects that are automatically updated and activated. This suggests an attempt to exploit OLE object handling to execute arbitrary code. The presence of RTF_OBJDATA, RTF_OBJAUTLINK, and RTF_OBJUPDATE heuristics strongly indicates that the document is designed to trigger malicious behavior upon opening, likely by embedding and executing a secondary payload.

Heuristics 3

  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • \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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000015ab.bin
4f8a91e256cefc94e9e40fd45674d24350e8122c185edc8afe9e4eff55cb4c43
rtf-objdata-decoded RTF \objdata at offset 0x15AB 3761 bytes