PDF malware analysis — malicious · bdf5e1e9eaf84709

MALICIOUS

PDF

4.2 KB

MD5: ed59756d694715f51f82a7830547cd09 SHA-1: cf2f1e49385ab4b69d857a52ab86c7c3b2b2d36b SHA-256: bdf5e1e9eaf8470950a0bda7bc47014c39f672518610a406ba5aeecf70fddb62

128 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader, specifically targeting XFA forms. The critical heuristic firing indicates that a decoded XFA payload was matched, suggesting the file is designed to execute arbitrary code upon opening. The ML classifier strongly supports the malicious nature of this PDF.

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` `40debfc4245391ce9032f573208c27cf5a2694e52bad4e6e52beaa604a9ed333`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12906 bytes

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