PDF malware analysis — malicious · 63ae5e70ddb298c7

MALICIOUS

PDF

100.0 KB

MD5: e8335b323ab9b606538cbeb8f8fef9f1 SHA-1: 13751703febaef962f759599ae1307721538e559 SHA-256: 63ae5e70ddb298c72dd3ac0644abff3045d8c39cd414ff53036d3d860ac9de70

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains an embedded exploit targeting CVE-2010-0188, a known vulnerability in Adobe Reader's XFA form processing. This exploit is designed to achieve arbitrary code execution. The presence of an embedded file and the ML classifier's high confidence further support its malicious nature. The primary goal is likely to download and execute a secondary payload.

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` `9c08f7a3825d13f9f9272d3361840f18c623500b6d2e7b6d36d6b62bc4d235d3`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	101645 bytes

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