PDF malware analysis — malicious · 06b8cf1430c51e9a

MALICIOUS

PDF

18.2 KB

MD5: ab182bbd726d76041892250845007e0d SHA-1: 52d6793830fd2dd90af95974fbcd53e53caba0f3 SHA-256: 06b8cf1430c51e9ac090d79888b1db583c431157eee9df4e602d5a3170832abe

168 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic and the presence of script content within an embedded artifact. The ML classifier and ClamAV detections strongly suggest malicious intent. The embedded script, although heavily obfuscated, is characteristic of exploits that download and execute further stages. The benign URL listed is likely a red herring or unrelated to the malicious functionality.

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` `30eeee7f1d0c26a46b6bb1b634e967307a0bf9336220f19f6d2917badd0b9fe2`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	17924 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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