Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2b49e5946f9776…

MALICIOUS

PDF

10.8 KB Created: 2012-06-17 18:03:37 Authoring application: gULDAkSMrYOzyXzsA (via nxEaWZPGpEoBlMy)
MD5: 40861f6bcb2889e1fb8fbf063e64bb42 SHA-1: 26f488e05a02206b331b11c77a92db0e17ba9231 SHA-256: db2b49e5946f97762d1046be44e22bbcb8c8af4265f34a51c37b8f291aa407ff
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The file is identified as a malicious PDF by ClamAV (Pdf.Exploit.Agent-35572). Static analysis detected embedded JavaScript, which is often used to exploit vulnerabilities within the PDF reader. The embedded JavaScript stream, named 'javascript_obj0009_000.js', is suspicious and likely responsible for downloading and executing a secondary payload. The document body content is truncated and does not provide further context on the lure.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0009_000.js
9619540c16445da974b34fc51a88fbd0f1640b5829b3e2babae35a886bd67a0f
pdf-javascript-stream PDF /JS object 9 at offset 0x727 8416 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).