PDF malware analysis — malicious · 5e1e5ac64e350372

MALICIOUS

PDF

14.6 KB

MD5: 031ff31fa1f64d86c46d7b31a07a93e9 SHA-1: c9242ea66e5a74085220a6dab1d3dfe9317b8a7b SHA-256: 5e1e5ac64e350372c30f54cd6535d6d2e232a06b6509252db6dc26c2922b6856

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains an embedded XFA form and a script payload, triggering critical heuristics for exploit and dropped artifact detection. The embedded script, identified as JavaScript, likely attempts to download and execute a second-stage payload, as indicated by the ClamAV detections. The specific exploit and dropped artifact signatures suggest a known malicious pattern.

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` `bc9a3d4e7c3e17857ff5fc129748c699b26b84c2da3eaa192c9a49c727987c89`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14246 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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