PDF malware analysis — malicious · 9156485e93ee1f31

MALICIOUS

PDF

4.2 KB

MD5: 39c1c89a5fab01193d01b5e6f9c1231a SHA-1: 0ee7236ba4056d0fd96eb60cc5abfa766afe1941 SHA-256: 9156485e93ee1f3103d3ce3e0545730e57961881417171d373c464ae59e5be0e

126 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains critical heuristic firings indicating the exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. An embedded script payload was also detected, suggesting the exploit is used to download and execute a secondary stage. The ML classifier strongly supports the malicious nature of this file.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188

PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
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.
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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `608ff31c8efd1a386b214e71e5b71f3decac7eb9643b891cc541ed8f67e6dc47`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12839 bytes

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