PDF malware analysis — malicious · 3d0e659007160e54

MALICIOUS

PDF

18.3 KB

MD5: 79f4f413bafb0897e01878542838dc9c SHA-1: eadd4fe0dee998a60f6680d7979638f11bdad36f SHA-256: 3d0e659007160e54808c4739c210647edfcc01dfffb8009fa8c175bd5af348c8

148 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains an embedded script payload and utilizes XFA forms, indicating a malicious intent. ClamAV detections 'Pdf.Exploit.Dropped-78' and 'Pdf.Exploit.Agent-36809' further confirm its malicious nature. The embedded script is likely responsible for downloading and executing a second-stage payload, as suggested by the critical heuristic firings.

Heuristics 5

ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
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_00000329.bin` `878a6b032d2041be217bd3f4c7d11c7025f2b6b1e0893a01e55fed90731bf447`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	17968 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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