PDF malware analysis — malicious · 58ef412bb858cd61

MALICIOUS

PDF

4.2 KB

MD5: 1ba00d4267d991ee07fcc994137ccc44 SHA-1: 2bde648522992db0409c781bffa3c2a2040618a8 SHA-256: 58ef412bb858cd6157b800f5d4da143b836fa3283e228e8ce0c5eeac4dbea7a9

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment T1190 Exploit Public-Facing Application

The PDF sample 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 document is designed 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` `064b9ab453eb0105baf0e264b312702b89582c09615ff85792fddcb573100aad`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12829 bytes

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