Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad1285270ad38222…

MALICIOUS

PDF

112.3 KB
MD5: 27b5906d687eb8b38b81e473bd87f671 SHA-1: 05727e663859fc0c6cf2aef767b5a245eb249d59 SHA-256: ad1285270ad382227ab5f72619c47fa6bef2e73fd19ba6af0c6a5ce41e2f7b5c
250 Risk Score

Malware Insights

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

The file is a PDF containing XFA (XML Forms Architecture) which is known to be a vector for exploits. Heuristics indicate a heap spray and a specific exploit for CVE-2010-0188, targeting Adobe Reader. The embedded script payload is likely responsible for executing the exploit, leading to arbitrary code execution. No specific family could be identified, but the attack pattern is consistent with exploit-laden PDFs.

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
0f65d3745d2580f16a96709da55c02876ce3f3dc96eee57de208d8a97c5e1731		 pdf-embedded-script PDF raw stream script payload at offset 0x23B 114289 bytes

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