PDF malware analysis — malicious · e377a1d210f75ed2

MALICIOUS

PDF

14.7 KB

MD5: 3285e0ce36ff5a69f5028cda720c305b SHA-1: 7f47f87e1ad60dc6c96a24bdeb38397b7df2ea2c SHA-256: e377a1d210f75ed2f4e9bd02b798bbbc5373d5036b4de6edcd51b7ebb76995cf

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious PDF T1566.002 Phishing: Spearphishing Attachment

The PDF was flagged by multiple high-confidence heuristics, including ML classification and ClamAV detections indicating it is a malicious dropper. The presence of an embedded script payload within an XFA form suggests an exploit is being leveraged to execute malicious code. The embedded URL is likely part of the exploit chain or payload delivery.

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.
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` `a197b1f8cdcf7feb5dabaaca8c4dba09bded1f9f5403dfb244ba9aea69e0b273`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14306 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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