Malicious PDF — malware analysis report

Static analysis result for SHA-256 a502a8a037e46f83…

MALICIOUS

PDF

4.0 KB
MD5: 2e795f312537703bd1dce6d1573508b2 SHA-1: 88f63ab77782b0b01cdb47709a6df72699f38383 SHA-256: a502a8a037e46f83d5a0b939660c5a7175beceb76dc43e8c72163f57922455a3
360 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript T1204.001 Malicious Link T1204.002 Malicious File

This PDF file contains embedded JavaScript that leverages several critical vulnerabilities including CVE-2009-4324 (media.newPlayer), CVE-2009-0927 (Collab.getIcon), CVE-2007-5659 (Collab.collectEmailInfo), and CVE-2008-2992 (util.printf). The presence of these exploit-related heuristics and the embedded JavaScript strongly indicates the file is designed to exploit these flaws to execute malicious code, likely for downloading and running a secondary payload. The ClamAV detection further confirms its malicious nature.

Heuristics 9

  • 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.
  • Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927
    PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution.
  • Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659
    PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits.
  • util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992
    PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure.
  • ClamAV: Pdf.Exploit.CVE_2009_0927-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.CVE_2009_0927-1
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js
65826ced7dc67ebaa23a85e6797d47c66ceba676edc9bf1fd7459a59f9bdf3d1		 pdf-javascript-stream PDF /JS object 7 at offset 0x26D 3166 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 eval/decoder/string-building token(s).
javascript_obj0007_001.js
c04534f5b5c44cdf20759acfa8a9826b40be3c73da7afa31dc11e04fcca76946		 pdf-javascript-stream PDF /JS object 7 at offset 0x26D 213 bytes

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