Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae7e8534a5cb5707…

MALICIOUS

PDF

111.5 KB
MD5: ad587244fe061d104d6d0edb5bde40dd SHA-1: 259e1053e72324050eb12c7f351333e74fdf6518 SHA-256: ae7e8534a5cb57076b1f6d81280e072f4341b12b15a02d4730c803790eb208c4
248 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.007 JavaScript T1059.001 PowerShell

The file is a PDF document that contains XFA (XML Forms Architecture) content, which is known to be a vector for exploits. Heuristics indicate the presence of heap spray exploit code and a specific vulnerability, CVE-2010-0188, related to LibTIFF in Adobe Reader. The embedded script payload is likely responsible for executing the exploit, leading to arbitrary code execution. No specific malware family was identified, but the exploit mechanism is clear.

Heuristics 7

  • 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.
  • XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAY
    PDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
  • 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_0000023b.bin
6c1a994e807011c8a134a25518ec7d4ef15263f76a69b9599e9d2df064e01c99		 pdf-embedded-script PDF raw stream script payload at offset 0x23B 113417 bytes

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