Malicious PDF — malware analysis report

Static analysis result for SHA-256 95750593241c9f73…

MALICIOUS

PDF

50.7 KB
MD5: 4d5bfd4e079146fa8102af7835585adf SHA-1: e56529f12d63a64bb30704d1ba4cc44310155828 SHA-256: 95750593241c9f73f2a1825d5fc3ecb1bc9145fb00301ef1c3464508dd8c3e95
196 Risk Score

Malware Insights

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

The PDF file contains embedded XFA (XML Forms Architecture) data, which is exploited via CVE-2010-0188. This vulnerability allows for the execution of arbitrary code, indicated by the 'CVE_2010_0188' and 'PDF_XFA_SCRIPT' heuristic firings. The embedded script payload suggests the intent is to download and execute a second-stage payload. The ClamAV detection further confirms the malicious nature of the file.

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.
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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_file_obj0008.bin
3f74acd6ae6c041b5b1427d1ed228ee2ec215a7840eb826a17844bd0d6fb3040		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 51173 bytes

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