Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 faba82b3056e5fcd…

MALICIOUS

RTF / .DOC

281.2 KB
MD5: 317c8bd7c84642ed0c37c1bb246cfdd1 SHA-1: 52cdf964e0b8de6ba5d4fe4b00903105848a3b90 SHA-256: faba82b3056e5fcd2a7b576aba4828de6a66abed240fb3641a906cce9e191b04
102 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 updated and activated, indicating an attempt to execute embedded content. The presence of `RTF_OBJDATA`, `RTF_OBJAUTLINK`, and `RTF_OBJUPDATE` heuristics strongly suggests that the file is designed to exploit vulnerabilities in RTF parsing to achieve code execution. The extracted artifact `objdata_00_off00000046.bin` is likely the payload or a component thereof. The attack pattern is consistent with a malicious document designed to deliver a second-stage payload.

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_off00000046.bin
5624aac996b59e2d399bb2246febb689304672fe5f3c9e9ec2d7442c68e4d2c9
rtf-objdata-decoded RTF \objdata at offset 0x46 143840 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.