Malicious PDF — malware analysis report

Static analysis result for SHA-256 682e114e8235cd40…

MALICIOUS

PDF

100.0 KB
MD5: 93adc48c82a7d2fcba37fc707bde4391 SHA-1: 37ffe5297f7d78fd8148d10b9c7a7e0f1165fca4 SHA-256: 682e114e8235cd4004ef4ad1046e0ff09c4edf76cdbb4fc336656e0fb2a5a08c
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file identified as malicious by an ML classifier and contains an embedded script payload. It specifically exploits CVE-2010-0188, a known vulnerability in Adobe Reader's handling of XFA forms, which allows for arbitrary code execution. The embedded script is likely responsible for downloading and executing a secondary payload, although its exact function is obscured.

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.

FilenameKindSourceSize
embedded_file_obj0008.bin
3b62b22cfd51adbad3ac88fc74478327e84ee5c4a94be202b330001b7b0fe0a8		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101673 bytes

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