PDF malware analysis — malicious · 04d967cffa63ba80

MALICIOUS

PDF

18.3 KB

MD5: f22dbd622cfe1d9d7bea4c4d1e27f838 SHA-1: 3a16188eefe749d5ffa60de01268712ea7f2df40 SHA-256: 04d967cffa63ba808cc3a5d62f39a177975d2729f2500dadba03b087b5c420a2

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains an embedded XFA form with a JavaScript payload. This script is designed to execute and likely download a second-stage payload, as indicated by the ClamAV detections for dropped and agent-like malware. The ML classifier and heuristic firings strongly suggest malicious intent.

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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded script payload in PDF stream low 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 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` `c015bc8dee9963e2e817d243d78ecbb36a619f4360e8bad2e65a18f6ad92c649`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	18024 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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