PDF malware analysis — malicious · 022863f0d4a618c4

MALICIOUS

PDF

100.0 KB

MD5: 8e83d4c3f267753387c2de21806db7a1 SHA-1: 261aca7e58cd687b2f7faafee7a91f5afb6c51d7 SHA-256: 022863f0d4a618c43a6ccbe7d4cb61b6d3345477ef40e47157e6cea0b961c75a

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is a PDF that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The heuristic firings indicate an embedded script payload was decoded from a raw stream, suggesting the exploit is used to execute malicious code. The ML classifier strongly flags this PDF as malicious. No specific family could be identified, but the exploit's nature points to a downloader or dropper.

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` `50440aea56c6817a0ca931050e06bb37f25dca665fb62537b372fec682b3aed1`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	101657 bytes

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