Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d4729559e55f74c…

MALICIOUS

PDF

99.9 KB
MD5: e16a221e7a2770341d8d28ed85516896 SHA-1: f353fea4a206e2671d0fb6fb6f3380b1ca0f7de5 SHA-256: 5d4729559e55f74c64dd2d1bc3f208aa98162593d5a4ad04a6ebe7715cc4b656
116 Risk Score

Malware Insights

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

The sample is a PDF file that exploits the CVE-2010-0188 vulnerability in Adobe Reader's XFA forms. This exploit is designed to execute arbitrary code, and the heuristic firings indicate an embedded script payload. The ML classifier strongly suggests malicious intent, 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.

FilenameKindSourceSize
embedded_file_obj0008.bin
09994e2821c97b52a6578cc3618bd1ec4c116774bf3d84d14381f345dbc90ab7
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101584 bytes