PDF malware analysis — malicious · daba7356c519a24b

MALICIOUS

PDF

84.7 KB

MD5: fa372e90fff1f4a9d0395dc6c1f58c78 SHA-1: 76d04fccbeedbc8a2ad21e5234198e1890d7aef1 SHA-256: daba7356c519a24beca8826185ce9a5420ac4f2f530d5de9cf498259f9cbcaad

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by multiple high-confidence heuristics, including ML classification and ClamAV detection, indicating it is malicious. The presence of an embedded script payload within the PDF stream, combined with the XFA form structure, suggests an exploit attempt. The ClamAV signature 'Pdf.Exploit.Agent-6136306-0' further confirms its malicious nature. The embedded script is likely responsible for downloading and executing a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9982

Heuristics 5

ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
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://ns.adobe.com/xdp/
- 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_0000023c.bin` `a3a1a3b2942d78e106fe5f23ecfacf86d5bdf3312412262cf9d65df442b32f18`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x23C	86761 bytes
Detection ClamAV: Pdf.Exploit.Agent-6136306-0 Obfuscation or payload: unlikely

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