PDF malware analysis — malicious · f204354c7450a714

MALICIOUS

PDF

14.7 KB

MD5: 85e12b9662c5a6792f789befe358eee6 SHA-1: 60ae1d70c0ae945019a61502a9f461ccfe8017e3 SHA-256: f204354c7450a714ef05bade5f332951b9046e430e377c332d1d7b18761cc724

148 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file utilizes XFA forms and contains an embedded script payload, as indicated by heuristic firings. ClamAV detections further confirm its malicious nature, identifying it as Pdf.Exploit.Dropped-78 and Pdf.Exploit.Agent-36809. The embedded script likely serves to download and execute a second-stage payload, although its specific actions are not detailed in the provided evidence. The embedded URL is likely part of the exploit chain.

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.
Embedded script payload in PDF stream medium 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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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` `3231b31538e313e59f1cdc82992b0cbef141b65b79fc639d8655e29c21cfe00c`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14302 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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