RTF malware analysis — malicious · 381702fb62191805

MALICIOUS

RTF

5.10 MB Authoring application: Msftedit 5.41.15.1507

MD5: 04d7696ab996ee598b001d5e3d82a947 SHA-1: f07556bed6cd7e20973b22f2d7aeed12593fafa1 SHA-256: 381702fb621918051b24658b1645bf3370d9db11662be6e718528702edacf3f2

182 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information T1105 Ingress Tool Transfer

The RTF file contains a high number of OLE-related heuristic firings, including embedded objects and a large quantity of hex-encoded data within an objdata section. A PE header was detected within this hex data, strongly suggesting that the RTF document is a container for a malicious executable. The document body text is minimal and does not provide further context on the lure.

Heuristics 6

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
Package object class high RTF_OBJCLASS_PACKAGE

OLE Package object — can wrap arbitrary files
Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX

RTF contains ~5332KB of hex-encoded data inside \objdata sections — may hide a payload
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_off000000f6.bin` `1d0779c2f56a8d3fae3571a17ddf91413dc330489df7e9a025b9960b7bce0bfd`	rtf-objdata-decoded	RTF \objdata at offset 0xF6	2599515 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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