PDF malware analysis — malicious · 16681fa9c53e3c48

MALICIOUS

PDF

99.8 KB

MD5: fede4a8d796162d2e82b75c624184786 SHA-1: 57f93443b165d36057f0d3eab14d6a1cb46c47c1 SHA-256: 16681fa9c53e3c482b3c98ee4ddd7a9e004e37d7e5e22402896efaf9d465d54f

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file that exploits CVE-2010-0188, a known vulnerability in Adobe Reader's handling of XFA forms. This exploit allows for the execution of arbitrary code, which is often used to download and run additional malicious payloads. The ML classifier strongly indicates maliciousness, and the embedded file further supports this assessment.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `baffbbd4eed794acf06dad0c6b687229f5ed83f1bdfab9ccd3637a7aff2cf1d0`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	101476 bytes

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