Malicious PDF — malware analysis report

Static analysis result for SHA-256 88a1d41a2691ef83…

MALICIOUS

PDF

2.3 KB
MD5: 6b162fa07c84bb56e6032bc5c0f720fe SHA-1: a06c488a4238e04ea3ca0abc81df34e770d1b310 SHA-256: 88a1d41a2691ef839807dad0120aa1b78fa2e50b697f29d61841298d4ca0a621
256 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The presence of eval() calls and specific exploit indicators like CVE-2009-0927 (Collab.getIcon) and CVE-2007-5659 (Collab.collectEmailInfo) strongly suggests it is designed to exploit these vulnerabilities. The embedded JavaScript, although not fully detailed here, is likely responsible for downloading and executing a secondary payload, a common technique for malware delivery.

Heuristics 7

  • 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. (matched in decompressed stream)
  • 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. (matched in decompressed stream)
  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
  • Suspicious extracted artifact medium 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.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0004_000.js
d693b301a70fcf52bd11c2e9211a359c9a965901ee3744f0b9046efa7d5650fb
pdf-javascript-stream PDF /JS object 4 at offset 0x249 6805 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).