PDF malware analysis — malicious · 8c5ebb734deb5ca2

MALICIOUS

PDF

18.3 KB

MD5: ea093d6f5f394cabec4b1cee566c5d6e SHA-1: af47aacf8c9e07e5cc47959665693eb32111a486 SHA-256: 8c5ebb734deb5ca277b32b6d2c30e07e0c8790d48639a2399781eba7c4e13917

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by multiple engines, including ClamAV, and exhibits characteristics of exploiting XFA forms and embedded scripts. The embedded script payload is the primary indicator of malicious activity, likely serving to download and execute a second-stage payload. The presence of an embedded URL further supports this, suggesting a delivery mechanism for further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36789 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36789
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.
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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000325.bin` `92525cd290882d7a0de06aad34fa3fb9ec1602b0d23acb108b4e5660080a5427`	pdf-embedded-script	PDF raw stream script payload at offset 0x325	18044 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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