Malicious PDF — malware analysis report

Static analysis result for SHA-256 b65ae241ed2b9a46…

MALICIOUS

PDF

5.0 KB Created: 2011-04-05 23:46:28 Authoring application: bub lob
MD5: b86e9b87eeea7c359849217575416444 SHA-1: 2c4661f04b46652fb92c3a1c9e5a7638d58145a0 SHA-256: b65ae241ed2b9a46c4c1305e14c3f28fd01a5cbe5e795a1e542ecdd922e174b4
98 Risk Score

Malware Insights

The PDF file contains an embedded JavaScript payload that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF XFA image processing. The heuristic firings indicate the presence of an exploit and an embedded script payload. The extracted JavaScript is likely responsible for downloading and executing a second-stage payload.

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
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off00000324.js
ad14d14898299d05485831d2d0e839c157868c8b9a3df4f64dcbd2eef795fa34
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x324 50788 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).