Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f9bc81f723b510c…

MALICIOUS

PDF

99.9 KB
MD5: 56594ddf13610ea414bc24e0df43eddb SHA-1: 521fed66217f46cd2d706f3389125dd279f17db2 SHA-256: 8f9bc81f723b510c60ebecde8693579282dc0f5f68fda3c5f9a73c0005ea6298
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious PDF T1059.001 Command and Scripting Interpreter: PowerShell

The sample is a PDF file that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF XFA image processing. The PDF contains embedded script content within an XFA form, indicating an attempt to execute malicious code. The embedded script likely downloads and executes a second-stage payload, although the exact script logic is obfuscated. The presence of an embedded file further suggests a multi-stage attack.

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.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • 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
62e34d6a59dc5c1156d2e096c911ff7b5921090985b6ddd356cd4a54b7fc0704		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101509 bytes

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