PDF malware analysis — malicious · 0dd8c7ed4302153e

MALICIOUS

PDF

18.4 KB

MD5: 8ea7bb8e048157fd6ed4a00589eeaac8 SHA-1: 55ff682949d470512a09e68f8da20839e8f93215 SHA-256: 0dd8c7ed4302153e4518a56404c1247e2a0b2d3342aa2ea3ce22a086e111f4ed

168 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF utilizes XFA forms and contains an embedded JavaScript payload. ClamAV detections indicate it's a dropper for further malicious artifacts. The embedded script, though truncated, appears to be JavaScript and likely responsible for downloading and executing the secondary payload, as suggested by the 'Pdf.Exploit.Dropped' and 'Pdf.Exploit.Agent' signatures.

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` `34e39d78df0ac7305c106c2125a6a01ecfbd852f7ebdd84c396f0558d35607ea`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	18102 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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