PDF malware analysis — malicious · 9fbd7523760bf396

MALICIOUS

PDF

18.4 KB

MD5: eb7d1038ff6d966582d8ad6437c3fb43 SHA-1: 9fd1b67a7df72b8cf99e13ac0f09c6a6f4c8a0a5 SHA-256: 9fbd7523760bf39694b92b219aedcf31e13003e462d1a0f1601c45500776e480

180 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file exhibits characteristics of malicious intent, including the presence of an XFA form and an embedded script payload. ClamAV detections further confirm its malicious nature, identifying it as Pdf.Exploit.Agent-36789. The embedded script is likely responsible for downloading and executing a second-stage payload, as indicated by the heuristic 'PDF_EMBEDDED_SCRIPT_PAYLOAD'. The embedded URL, while not directly actionable due to encoding, points to a potential command-and-control or download source.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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` `f0387f50f2b021a407cbfe235da1199e7f9b653d4ebe9eb07099a1f7282f7544`	pdf-embedded-script	PDF raw stream script payload at offset 0x325	18072 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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