Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1cff14d445740c…

MALICIOUS

PDF

99.8 KB
MD5: 9b69107c9e003bc7b0b954757e70a750 SHA-1: 2b771f6faf149445331717b8fb63d424b1081364 SHA-256: ec1cff14d445740c07c5ba417d202ed0d4af3b586895be51f6546c8ae9590f1c
136 Risk Score

Malware Insights

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

This PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The heuristic firings indicate the presence of an embedded script payload within the XFA form, which is designed to be executed upon opening the document. This exploit is commonly used to download and execute further malicious content.

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
5a3b7fdc5701d415f003e5f9c0a4bd7638f228a9c96d7ba9b43c7ee40dd0e200		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101482 bytes

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