PDF malware analysis — malicious · 3bc7765dd8447a63

MALICIOUS

PDF

18.3 KB

MD5: 564cd8065d69ba47ee86d6d4260e239b SHA-1: e69caac36d5a4b9aae272900b5dba28da68a1743 SHA-256: 3bc7765dd8447a63744dd32a573bc65e04c366a6b1f2a65c34d02f4eafb66029

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 utilizes XFA forms, a known vector for exploiting vulnerabilities. ClamAV detections indicate it's a malicious PDF, likely delivering a secondary payload via an embedded script. The embedded script is suspected to be responsible for the malicious activity, potentially downloading and executing further stages. The embedded URL is likely part of the exploit chain.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36789 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36789
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_00000325.bin` `89bb87e70db593562ad9ed07a888a4790fcb2c75b31414df82ea1538641a617c`	pdf-embedded-script	PDF raw stream script payload at offset 0x325	17983 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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