Malicious PDF — malware analysis report

Static analysis result for SHA-256 be2ee0512a25940b…

MALICIOUS

PDF

1.4 KB
MD5: 752fda05097a20ca5eafb146e76ab773 SHA-1: 67c2c6f1f72df6da5d0280a3cd157b55f49dafb9 SHA-256: be2ee0512a25940bed8b0243ee88f438a6aa7ba2f561108697ce4b60627f78e5
118 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.007 JavaScript

The PDF file contains multiple embedded JavaScript streams. The critical heuristic firing for CVE_2009_4324 indicates exploitation of a vulnerability related to media player objects. The unescape() function call suggests obfuscation of the JavaScript payload. The overall pattern points to a malicious PDF designed to leverage this exploit to run arbitrary code, likely for downloading further malware.

Heuristics 5

  • media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
    PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (matched in decompressed stream)
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj111711_000.js
ed214d008ca7f8fad0affc792159f2b30ce479dc90c5348e0751937c74ebe0c2
pdf-javascript-stream PDF /JS object 111711 at offset 0x197 291 bytes
javascript_obj111712_001.js
7aebda9b8cfff4037495a230958ab3a058bc469c61da6a918aae8f909b5307e1
pdf-javascript-stream PDF /JS object 111712 at offset 0x2B2 996 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s).
javascript_obj111713_002.js
d2f98bec78aa096efa5aca99b701d5e6b9a8e2cf728fb7e79bf248862bacf14b
pdf-javascript-stream PDF /JS object 111713 at offset 0x51C 70 bytes