Malicious PDF — malware analysis report

Static analysis result for SHA-256 a705e1f217abe01f…

MALICIOUS

PDF

111.0 KB
MD5: 18fbfc2c3dd2a2f235be73f24f3dad3d SHA-1: 7f7867dd4dfbbac78b3deff5cf6c96597d266e2e SHA-256: a705e1f217abe01fd7d5039a9e659fed03e54db1b95ce042b2bdc1ea2cdb1ce3
248 Risk Score

Malware Insights

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

The PDF file contains XFA (XML Forms Architecture) content, which is known to be a vector for exploits. Specifically, the 'PDF_XFA_HEAP_SPRAY' and 'CVE_2010_0188' heuristics indicate the presence of an exploit targeting Adobe Reader's LibTIFF component. The embedded script payload, identified by 'PDF_EMBEDDED_SCRIPT_PAYLOAD' and 'PDF_XFA_SCRIPT', likely contains the malicious code executed by the exploit. The ClamAV detection further confirms its malicious nature. The embedded URLs are likely related to the XFA template or data, but their reputation is unknown or benign, suggesting the primary malicious activity is within the exploit itself.

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
8d4e9354e66d37aa5fff812b0a070d6f437f7c7c3107b4999a81af6a7de50c9d		 pdf-embedded-script PDF raw stream script payload at offset 0x23B 112929 bytes

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