PDF malware analysis — malicious · 48d4d6d3dc520549

MALICIOUS

PDF

4.1 KB

MD5: f9411ec77b69a38cbc49ad3f2063f937 SHA-1: 4b1e7d9dbd7eb53f1879ccd4485522a4d2fa1a4e SHA-256: 48d4d6d3dc520549f9148404b2b0fda93f54936dd171bcb851ded38a2928d6d2

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File 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. The presence of an embedded script payload further suggests that this exploit is used to download and execute a secondary malicious payload. 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` `98bb0d56f18866aa3598e6cb88e7927521a2c0eb2da1ce6d313a6a16b4741609`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12824 bytes

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