PDF malware analysis — malicious · 05c98cb138356a1c

MALICIOUS

PDF

19.1 KB

MD5: 856dadb404ebcbe353952a5395eef399 SHA-1: e2a9b3754c03a93c92cb6bf2435f9b15aeede2f5 SHA-256: 05c98cb138356a1c3edf6967bcb206ffb34ad7d1db267d11ae1905e402d66618

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file was flagged by ClamAV as Pdf.Exploit.Dropped-78 and a machine learning classifier with high confidence. It contains embedded JavaScript, which is likely used to exploit vulnerabilities and download a secondary payload. The embedded file 'embedded_file_obj0008.bin' is the likely payload.

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` `8cad25ebaac8b2dd74efb5b2993f41f0acdd1704176db2d72b3eb1bf9bd94587`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	18844 bytes

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