PDF malware analysis — malicious · f0d97d1fe7e030e1

MALICIOUS

PDF

21.1 KB

MD5: 01bc531872a488e5db52921fc5c530ad SHA-1: 79ff0f2d9874c2e72b4c101e494c89396fff7931 SHA-256: f0d97d1fe7e030e149eab171eb6d180d02f2d79661e61c01a2a179b5b8c796f4

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that utilizes the 'eval()' function and 'unescape()' for obfuscation, indicative of exploit kit activity. The critical heuristic 'CVE_2009_0927' specifically points to the use of 'Collab.getIcon' to trigger this known vulnerability. The embedded JavaScript is designed to download and execute a second-stage payload, likely for further system compromise.

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. (identified after JavaScript deobfuscation)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `6ad991bd0fe2e843839d181301dceccb1ba9d8eb1cc7adb3dbd4c258a777932c`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3347 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).
`javascript_obj111712_001.js` `8a5abb603bcbea83e2b9b1f0e9257d150daefb9fb6c47d321aeaf7d588b8380b`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xED7	15876 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).
`javascript_obj111713_002.js` `2810428d2b000cc7e14c729c4682c629f108a60512741736361ff7061fcc3ca4`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4D11	1755 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `2ba9baf026290b1f410f1bb610dba7ed7e5abc98e9e30bee7fae37186e112ec1`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xED7	1526 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `407624ceb11bdfcccd03817d5cc6229f3a3f8dfc15051e1567d07f2b81bcede8`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x4D11	100 bytes
`legacy_pdfkit_stage_002.js` `3d92764b57f2a9528a794a8bc937362bdce9f1fe5b9d644d7e9bcca6edb593dc`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xED7	1627 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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