PDF malware analysis — malicious · acf5ee7c65cf9a80

MALICIOUS

PDF

7.1 KB

MD5: efe3d6daa681d100376092013bacc396 SHA-1: bb56f0a1f2f5421cb20adadbe20ade857bf6c6e8 SHA-256: acf5ee7c65cf9a807c3a7955e2bf9b361c65d40519bc73c3a3e86cdca8daf188

120 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 Malicious Link/Object

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_0927 heuristic suggests exploitation of a known vulnerability related to Collab.getIcon. The embedded JavaScript streams, particularly javascript_obj0007_000.js and javascript_obj0007_001.js, likely contain obfuscated code designed to download and execute a secondary payload. The presence of unescape() calls further supports the obfuscation and dynamic loading of malicious content.

Heuristics 5

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.
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.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `867dc76ff20291a80fe3e55f03f126a8139ef2683eda12a50dacbe5110a0043a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x26D	6346 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).
`javascript_obj0007_001.js` `0d6cdadc45b995e15d9cb4e5cc557dc299a6d22303ad213345c54d0a13ca4b21`	pdf-javascript-stream	PDF /JS object 7 at offset 0x26D	3158 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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