PDF malware analysis — malicious · e443f85950e5ecfa

MALICIOUS

PDF

14.6 KB

MD5: 44d233362d406a4dd1f14a35637bc8b6 SHA-1: cfd3dcbf584198a80470865446946012de6b8315 SHA-256: e443f85950e5ecfa4a2b7cf49e450e5888e011b0f3abdd4ec3907be07d0d09ae

148 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains an embedded script payload within an XFA form, as indicated by multiple critical heuristic firings including ClamAV detections for Pdf.Exploit.Dropped-78 and Pdf.Exploit.Agent-36809. The embedded script is likely responsible for downloading and executing a second-stage payload. The presence of an embedded URL further supports the malicious intent.

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` `e0bf43c174e723e8ed822598df3ead7e47e409713c9acee78323b51ff7f0a869`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14261 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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