Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f1d47e7c326045c…

MALICIOUS

PDF

80.1 KB
MD5: cfbf74d6e82993866f0f0d68e66ac55b SHA-1: c8aba3359e2ebca3d3cad479258fa1f6cf83265f SHA-256: 4f1d47e7c326045c7c95edf41315276d9ba8bfa0ff772c5287078fa82c666bed
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

This PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The critical heuristic indicates that the decoded XFA payload was matched, suggesting the file attempts to leverage this exploit. The presence of embedded script payloads and XFA forms with executable scripts further supports the malicious intent, likely to download and execute a second-stage payload.

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.
  • 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
e73dd873cc1425d26732acd24ca76e7839f849bbec3251498c418242346869aa		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 81299 bytes

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