Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 e924aae0512c916a…

MALICIOUS

RTF / .DOC

632.2 KB
MD5: 0e2bce329b6813af53cfa56266c837dd SHA-1: 924416e38bfdfca581ec0202d0d9645f13d40d53 SHA-256: e924aae0512c916a174679e3c6de6a95d884f52741db59286814191489fb23c0
147 Risk Score

Malware Insights

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

The RTF document contains embedded OLE objects that are automatically linked and updated, indicating an attempt to execute embedded code. The presence of `RTF_OBJDATA`, `RTF_OBJAUTLINK`, and `RTF_OBJUPDATE` heuristics strongly suggests that the document is designed to exploit OLE object handling to deliver a secondary payload. The extracted `objdata_00_off000016d6.bin` artifact is likely the embedded malicious content.

Heuristics 4

  • 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
  • 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_off000016d6.bin
ca81a38a73e03eab739fca9c5993d93927df630df8407bfd15b286c8d8c95348
rtf-objdata-decoded RTF \objdata at offset 0x16D6 128573 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.