Malicious PDF — malware analysis report

Static analysis result for SHA-256 74f7c4738d12c5a8…

MALICIOUS

PDF

99.8 KB
MD5: 3fd6206ee229f65b9937e447c877993d SHA-1: cc36356bf6327685dbfb5d16f78a8594d7f894a2 SHA-256: 74f7c4738d12c5a809b69de800f156912439fb2d80305d2273147d08cd8120bd
116 Risk Score

Malware Insights

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

The PDF sample exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF and XFA forms. This exploit allows for the execution of arbitrary code, likely to download and run a secondary payload. The presence of XFA form elements and embedded script markers strongly indicates a malicious intent to leverage this vulnerability for initial execution.

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
25a0ae714a74789aa7eea0796b3141bce40e90d02d27a7c4a49929073e0c5ad8		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101472 bytes

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