PDF malware analysis — malicious · 688cf049150423f3

MALICIOUS

PDF

3.8 KB Authoring application: rxode (via va)

MD5: 535040d6b33da2366bfdd6ba41c5be29 SHA-1: 8252b5e892e56fbab4c3bd7eaf07ecf1181b0d03 SHA-256: 688cf049150423f3e4b35e0bfe8dc655e012ed39bc197b72f6b4a24f69439aab

118 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF sample contains an embedded file and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader's LibTIFF component via XFA forms. This exploit allows for arbitrary code execution, typically used to download and run additional malicious content. The ML classifier strongly indicates maliciousness, supporting the exploitation finding.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

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.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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/xci/1.0/
- http://www.xfa.org/schema/xfa-template/2.4/
- 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_obj0041.bin` `9e0b1b27d79f66c327cf7583794686f3e74d571bdd86675d8704a2ae11f86362`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0x53	9794 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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