PDF malware analysis — malicious · ad598bfc9b2cbc2d

MALICIOUS

PDF

4.2 KB

MD5: 2f4a274c6138b9241fd6b891307be015 SHA-1: 92a0ab259f151d685b82b97a84af58eb635ddb56 SHA-256: ad598bfc9b2cbc2d6e3d0be6d93f2e6bfe02d7723592919e3d4fc7b3015dae91

126 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains an embedded exploit targeting CVE-2010-0188, a known vulnerability in Adobe Reader's handling of LibTIFF XFA images. The heuristic firings indicate that a script payload was embedded and decompressed within a PDF stream, which is consistent with exploiting this vulnerability to achieve code execution. The ML classifier strongly flags this PDF as malicious. The embedded file and XFA form are components of the exploit delivery mechanism.

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` `3f4522bfb4457b78882f5eacfe6e52ee9a0fe37bccbcbe12b33811214bea160f`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12931 bytes

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