Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 7eb87d873ba0dc83…

MALICIOUS

RTF / .DOC

350.3 KB
MD5: c98ec00e360e36be45e28acdacba46ca SHA-1: 15983726a724dc6ecb1bcf1a58432ac850d5579a SHA-256: 7eb87d873ba0dc837980549ebe2581ffbde6e4c27578b9bfae8ea2c05f321ed6
147 Risk Score

Malware Insights

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

The RTF file contains embedded OLE object data and is configured to automatically update and activate these objects. This strongly suggests an attempt to exploit OLE vulnerabilities to execute arbitrary code. The presence of RTF_OBJDATA, RTF_OBJAUTLINK, and RTF_OBJUPDATE heuristics confirms this malicious behavior. No document body text or scripts were extracted, limiting further analysis of the payload's specific intent.

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_off000017d6.bin
e40c033dc30bb484cf4390f0e179aaacf4447623273cc09f69b59167bcbe11e4
rtf-objdata-decoded RTF \objdata at offset 0x17D6 64067 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.93, consistent with packed or encrypted content.