PDF malware analysis — malicious · 886f8bc18bbbb7be

MALICIOUS

PDF

4.2 KB

MD5: cf055dd3b770ec828b4a92867aaf2929 SHA-1: 5573a846ad793fef167c48d35c85c7709602fc7b SHA-256: 886f8bc18bbbb7bea069f23a1c4d6af2edf750646831ccf73464a5e6c85faccc

126 Risk Score

Malware Insights

MITRE ATT&CK

T1190 Exploit Public-Facing Application

The PDF file contains an embedded XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. This exploit is designed to download and execute a secondary payload, indicating a clear intent to compromise the user's system. 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` `febf824ad79709daa8b2eb50f98d35104a70cb73cb02fcce49b6554446f66962`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12970 bytes

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