PDF malware analysis — malicious · 4a4d781e65c90d77

MALICIOUS

PDF

42.8 KB

MD5: 415349696117b7e93d14fa0c1944b361 SHA-1: 9deff9f47225de3f963f7f792b518df1fc0bfe8c SHA-256: 4a4d781e65c90d77e5a6d8d3f62cff84c65821b64be43e010035cba0726b3ae5

156 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The critical ClamAV detection and the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic indicate that this PDF contains an embedded malicious script. The script is likely designed to exploit a known PDF vulnerability, as suggested by the 'Pdf.Exploit.Agent-36830' signature. The embedded URLs, while not directly malicious, are associated with XFA forms, which can be a vector for exploits. No document body text was available for analysis, but the presence of an embedded script payload strongly suggests the intent to download and execute a second-stage payload.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-36830 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
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.
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `4204a762a48de508ace04061213cf66b05bdc4c651f4fde6619118e0e36bf224`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	43025 bytes
Detection ClamAV: Pdf.Exploit.Agent-36830 Obfuscation or payload: unlikely

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