PDF malware analysis — malicious · 623919d0cf76cf98

MALICIOUS

PDF

12.2 KB

MD5: 17a2c8127580e22fe8621e05a7da99db SHA-1: 4e65d0cc22715029d2680728ec77af114996e79d SHA-256: 623919d0cf76cf98fcf555def57c6b7c01ca8c16cdcb83c228c2d3c93f54fed4

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it contains an exploit. The presence of embedded script payloads and embedded files strongly suggests it's designed to download and execute a second-stage payload. The benign URLs present do not detract from the malicious indicators.

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
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `47e4f6a171495a1afb450914ec170425871f7a1a4a2422bcf5c940dbb7dc62f0`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11689 bytes

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