PDF malware analysis — malicious · f0b5b6499af95722

MALICIOUS

PDF

4.1 KB

MD5: 31c311355d749d31f803516b8eaa12d5 SHA-1: 81f8be941406b70b56d39e10c6cb7e8ec60ddde6 SHA-256: f0b5b6499af95722c8861cc495f807d3fb0d409da9bdc8b06e1a91e9ffdcc2ba

126 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF sample exploits the CVE-2010-0188 vulnerability in Adobe Reader, specifically targeting XFA forms. This exploit allows for arbitrary code execution, likely to download and run a second-stage payload. The ML classifier strongly indicates malicious intent.

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` `cdc4750835e3b0c84e38458b1b76110ed761c250f5c0bdeb4071dc06a1135ef1`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12845 bytes

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