Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3d0945ca15dc935…

MALICIOUS

PDF

75.9 KB
MD5: 3f1d63c5541e95fd4797653ea6dad876 SHA-1: 777ce00af9dc9b1d253a2d17dfb0d359e6717749 SHA-256: b3d0945ca15dc93557ce0a22dc3d8874732783abed3941629c592752f1351c35
188 Risk Score

Malware Insights

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

The sample is a PDF file that leverages the XFA (XML Forms Architecture) feature to deliver a malicious payload. Static analysis detected a critical heuristic firing for CVE-2010-0188, indicating an exploit targeting a vulnerability in Adobe Reader's LibTIFF processing within XFA forms. An embedded script was also identified, which is likely responsible for executing the exploit. The primary attack vector is user interaction with the malicious PDF, leading to code execution.

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.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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.
  • 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_pdf_script_00000286.bin
608a50a789ea59d139fb2615b01d7cc2f16add1a8241d99accdbd99a84123e74		 pdf-embedded-script PDF raw stream script payload at offset 0x286 76950 bytes

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