PDF malware analysis — malicious · 1919699d6d075b69

MALICIOUS

PDF

3.8 KB Authoring application: rxode (via va)

MD5: 77e03f4a74a9fc6783cc943917ac773a SHA-1: 1572ccb69b2f16673436befed43014f8d4a9a33f SHA-256: 1919699d6d075b697263b988baf2f281856f8d97d50caab5a127593f314e865f

114 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF sample contains an embedded XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. This exploit is known to be used for arbitrary code execution, typically to download and run a second-stage payload. The ML classifier strongly indicates maliciousness, supporting the exploitation finding.

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 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
Embedded script payload in PDF stream low 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0041.bin` `0635d753d3171b7f9e6cfc26f8b26a36536f940c0c12828538798022ad77f216`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0x53	9822 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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