PDF malware analysis — malicious · 99aa0f9437295170

MALICIOUS

PDF

18.3 KB

MD5: 5bd540593f77aaca2091a994f69980a5 SHA-1: f3ea87978f85357cdc0c4ae2949ec2166c9615b6 SHA-256: 99aa0f943729517085587bdd8fde653fd54c7c02fa30a4999be4317d2e688fe1

148 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file utilizes an XFA form and contains an embedded script payload, as indicated by the PDF_XFA and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. ClamAV detections (Pdf.Exploit.Agent-36789 and Pdf.Exploit.Agent-36809) confirm its malicious nature. The embedded script likely serves as the exploit mechanism to deliver a secondary payload. The presence of an embedded URL further supports this, suggesting a download or redirection attempt.

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` `236c530da3d00e3db00fb40c46decd56b234fa98dee43d8310bded26fc2fa5f5`	pdf-embedded-script	PDF raw stream script payload at offset 0x325	18029 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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