RTF malware analysis — malicious · cc2688bba2c62a06

MALICIOUS

RTF

221.8 KB Authoring application: Msftedit 5.41.21.2509

MD5: 6c79b04ce1b541980b1a4406b0e583d0 SHA-1: 34d158d4e44647046d1e36d69687ca7bdb64bc34 SHA-256: cc2688bba2c62a06f46e8a368f3ad38a3519a48a1416d6f52d061bb398834fd1

262 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains embedded OLE objects, including a PE header within its hex data, indicating a malicious payload. ClamAV signatures confirm this, identifying it as Win.Spyware.78823-2. The document body's instruction to 'just click on the icone' suggests a social engineering lure to execute the embedded malicious artifact.

Heuristics 7

PE header (with DOS stub) in hex data critical RTF_MZ_HEX

Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
ClamAV: Win.Spyware.78823-2 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Spyware.78823-2
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
Package object class high RTF_OBJCLASS_PACKAGE

OLE Package object — can wrap arbitrary files
OLE object data medium RTF_OBJDATA

RTF contains 1 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
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.

Filename	Kind	Source	Size
`objdata_00_off000000da.bin` `0ba58d7e2abf9514f733dcb19d39a6ac2094b156aea16134a6bd3a76f6b37682`	rtf-objdata-decoded	RTF \objdata at offset 0xDA	106830 bytes
Detection ClamAV: Win.Spyware.78823-2 Obfuscation or payload: likely Carved artifact entropy is 7.79, consistent with packed or encrypted content.

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