PDF malware analysis — malicious · 325a42cf392557b9

MALICIOUS

PDF

33.5 KB

MD5: 075d516da46aaca77aa4b60bd42cab90 SHA-1: 6dc7aa59fbc092220772340eb07f384c54e7ee53 SHA-256: 325a42cf392557b9da129adf7c5f20149efd15e7ad0c8cb9d7d9854455d057f8

186 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF was flagged by multiple heuristics, including ML classification and ClamAV detection, indicating it contains an exploit. The 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic suggests the PDF contains an embedded script designed to download and execute a secondary payload. The ClamAV detection name 'Pdf.Exploit.Dropped-93' further supports this, implying the PDF is a dropper for other malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9860

Heuristics 6

ClamAV: Pdf.Exploit.Dropped-93 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-93
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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_00000383.bin` `a540c4e88ac8cf99d8c255c27fb49a01ed8ce7eaeaf097b1024484d3abc759a7`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x383	29715 bytes
Detection ClamAV: Pdf.Exploit.Dropped-93 Obfuscation or payload: unlikely

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