RTF / .DOC malware analysis — malicious · 38c0584fa67bad59

MALICIOUS

RTF / .DOC

344.9 KB

MD5: 4a4b0fe776096f979b4de0321dc1af69 SHA-1: 3a12d6e29fb68cce9a093e539091ffb81f955479 SHA-256: 38c0584fa67bad5930200ae5afebee7e0b354fae66da06f683a0d64a23c03ecf

140 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains multiple OLE objects, with heuristics indicating the use of \objdata and \objupdate to force OLE activation and the presence of Composite Monikers. This suggests the document is designed to exploit OLE vulnerabilities to execute embedded content. No scripts were extracted, and the document body contained only formatting information, making it difficult to determine the exact payload or user-facing lure.

Heuristics 5

Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED

RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
\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 3 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
Suspicious extracted artifact medium 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000007ce.bin` `a630861cb18aac767736f505741a57e6af5c32706d1609595c402d56ecdebdfc`	rtf-objdata-decoded	RTF \objdata at offset 0x7CE	78437 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).
`objdata_01_off000285b7.bin` `ad7bf1923f855fca5949d0c557a2a819b106cd84b204870bcc59064eb0c6e331`	rtf-objdata-decoded	RTF \objdata at offset 0x285B7	2632 bytes
`objdata_02_off00029b5a.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x29B5A	12297 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.