Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a0cf8d5ac370d0…

MALICIOUS

PDF

86.4 KB
MD5: bdcf4ebf745d1a7db9c57f0df8be7b9b SHA-1: d44fd034ba60d7f0fd5f78a022f6340133ac6394 SHA-256: c6a0cf8d5ac370d0fb14c1aaa58dae60a7764950670b357d8a4c74402798d1f4
248 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF file that utilizes XFA forms and exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF processing. The presence of heap spray exploit code and embedded script payloads indicates an attempt to execute arbitrary code upon opening the document. This is further confirmed by ClamAV detection as Pdf.Exploit.Agent-6136306-0.

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_0000023c.bin
743d0bbfdc5a49c0f1b4e13d20dbfecac79a1e18122ba711c3d9d330b99a3f18		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 87731 bytes

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