Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb4fb148e140a1a…

MALICIOUS

PDF

79.7 KB
MD5: 4202cf26d2342770854113229a3ac430 SHA-1: 869ad344e913f363a9d1c995d21b4d4af329ad31 SHA-256: 8cb4fb148e140a1af8dc2e279f5333b6498dfdc5047d22e4757440e4b51edf76
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The file is a PDF document that triggers the CVE-2010-0188 exploit, targeting Adobe Reader's LibTIFF component. The presence of XFA forms and embedded scripts indicates a malicious intent to execute code. The embedded script payload, though large, is likely responsible for downloading and executing a secondary stage. The exploit is a well-known method for initial code execution.

Heuristics 6

  • 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.
  • 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_00000288.bin
dd47e0b949563c737fdf12f97f1d1a9b77215d6b6a7c0481aafdbd189e0210e1		 pdf-embedded-script PDF raw stream script payload at offset 0x288 80915 bytes

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