Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f76d79d0987b9ed…

MALICIOUS

PDF

99.8 KB
MD5: fa0bd9f641380e305e2b601d97bd07af SHA-1: 4f0cb4da7bf9bea78c7768040b6719d70087738e SHA-256: 4f76d79d0987b9edecc416a436c2dac9d31abddc37839c8b099688f74610bbbb
136 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The PDF contains an embedded script payload, indicating an attempt to execute malicious code upon opening. The script likely downloads and executes a second-stage payload, though its exact functionality is obscured. The embedded URLs are related to XFA schemas and Adobe, but their reputation is unknown or benign, suggesting they are not direct IOCs for malicious infrastructure.

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
95b57ea7ecba753acdf1deec5cf9cf3f8f7308d3fc53ce2ee360aa67cd43ac5b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101491 bytes

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