Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f52c42eb0bf121…

MALICIOUS

PDF

99.4 KB
MD5: feb496d3d949cc8e0e99a33939b14cfa SHA-1: 43801570162cc4aaef9ca940e157723d4e1addc0 SHA-256: f5f52c42eb0bf121c5765d2b891c9026c2f41cc019f2f39cc1127c5ae53fc6e0
96 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. This exploit allows for the execution of arbitrary code, likely to download and run a second-stage payload. The presence of embedded URLs, though not directly malicious in reputation, are part of the XFA structure exploited by the vulnerability.

Heuristics 5

  • 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.
  • 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
4eead848ed8c8602784123c4fa6614e6d74222d13592bb849650f017d18128bd
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101057 bytes