Malicious PDF — malware analysis report

Static analysis result for SHA-256 59fb3189234d4a23…

MALICIOUS

PDF

89.7 KB
MD5: 8e98a2250435c31b142ac461136df5fd SHA-1: d436a53ea65aa7281e6cfaf6ce467030c3f4b251 SHA-256: 59fb3189234d4a23f5788172ff52f2615cb6b41e5f33e5fb6de8fb00c13222eb
248 Risk Score

Malware Insights

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

This PDF file utilizes XFA (XML Forms Architecture) which contains a heap spray exploit targeting CVE-2010-0188 in Adobe Reader. The XFA form includes executable script that is triggered upon opening the document, leading to the execution of the exploit. The ClamAV detection confirms its malicious nature 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
ddcc514082d99693b2ad8275b0c99da10ddd6bb5b416dd48c64398da44fb68ba
pdf-embedded-script PDF raw stream script payload at offset 0x23C 91092 bytes