Malicious PDF — malware analysis report

Static analysis result for SHA-256 348c944883a77e74…

MALICIOUS

PDF

99.9 KB
MD5: fef35f2c49b6bc65e7a1448433e0c488 SHA-1: cd6b0a5235650bc82ff2a61b2399c8dd556d6cf4 SHA-256: 348c944883a77e747abe098787777ca27557aba535c9a4c277c739101a2bba9b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Phishing: Spearphishing Attachment

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF and XFA forms. This exploit allows for arbitrary code execution, likely to download and run a secondary payload. The presence of embedded XFA form data and script markers further supports this attack vector. The embedded URLs are related to XFA specifications and do not appear malicious.

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 script payload in PDF stream medium 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 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 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
e1fc701f7cca9465b301141b925e5393b24e936a98f2c36c8c83b16ff10976a4		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101532 bytes

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