Malicious RTF / .OLE — malware analysis report

Static analysis result for SHA-256 48364289c19f75e7…

MALICIOUS

RTF / .OLE

164.0 KB
MD5: 2638a7aca165fd1204a859bd6636e975 SHA-1: 99544caedbe7b579a7c2965d8fe5fd3eccb372b6 SHA-256: 48364289c19f75e70cbd5a9c792e29c3b9c6a71ee271b6a2e49ad346298d52d6
62 Risk Score

Malware Insights

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

The RTF document contains embedded OLE object data, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this embedded object is designed to be automatically activated upon opening the document, likely exploiting a vulnerability to execute arbitrary code. The extracted objdata_00_off00000071.bin file is a suspicious artifact that warrants further investigation.

Heuristics 3

  • \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_off00000071.bin
03c7247cf44b6fab029f8de74f8319a4a4cce73f6805bbbc7145497ec5645804
rtf-objdata-decoded RTF \objdata at offset 0x71 83853 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.