PDF malware analysis — malicious · c52aa2aad7ed391c

MALICIOUS

PDF

14.7 KB

MD5: 0c4c06cfbbe52de38b691476fd69ff80 SHA-1: 0634ec499dbd5aaa12dfac4bbf70ddd6cc876da0 SHA-256: c52aa2aad7ed391c9dc926add2940127bbfd0f7f4ccb4d7e1c0fb102032dbebb

178 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF file was flagged as malicious by multiple engines, including ClamAV, which identified it as Pdf.Exploit.Dropped-78 and Pdf.Exploit.Agent-36809. It contains an embedded script payload, indicating it's designed to execute malicious code upon opening. The presence of an XFA form further suggests a complex exploit. The embedded URL is likely part of the exploit chain.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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` `9e793feb654cbe4fea2fb3c5f50bf54f2ad274038e7485e07d87528faa73ac5f`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14296 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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