Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d3c70c23999458a…

MALICIOUS

PDF

99.5 KB
MD5: 8f9edb010720c07ce325c57632e64e95 SHA-1: fe4f3c6df682001d0d69f13abadb0f6bcc056096 SHA-256: 3d3c70c23999458a41ec6c7255323bdc956723d2672e0a9fde69358f408f7467
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 document exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. The XFA form contains executable script which is likely responsible for delivering the exploit payload. The embedded file and script heuristics indicate the document is designed to download and execute a second-stage payload.

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
1e3dff1ea019a6f09be02b3cb5c6d7c51b7519b58d68e00f3af29973ae300506		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101182 bytes

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