PDF malware analysis — malicious · 059fe21c4d172b10

MALICIOUS

PDF

14.6 KB

MD5: e68698d4b2a4d2e9f6fa76aa93f3b174 SHA-1: b62d2e2712bc9dd02ef64fb848613a7b5dd1e797 SHA-256: 059fe21c4d172b10018e07982e2c5c858548d841bafad0284a572fcc249eb985

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF sample contains an embedded XFA form and script payload, flagged by heuristics and ClamAV as malicious. The embedded script, identified as JavaScript, likely attempts to download and execute a second-stage payload. The ML classifier and ClamAV detections strongly indicate a malicious exploit targeting PDF vulnerabilities.

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` `99fa54cde91db10b0c423eb6fe2031dcbbc3747021ee955fb1b546c2167bebcf`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14222 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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