PDF / .ORG malware analysis — malicious · 46fa828f5accd964

MALICIOUS

PDF / .ORG

20.3 KB

MD5: 17ce23bee0c5d88bed6c2fcc0ce4eacc SHA-1: 6199874ac8258ab0caf38ef3defe74c52ea9f93e SHA-256: 46fa828f5accd9640d64bd154802f5c40ab1770ed3fb44995f40c45df33f5cc7

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF sample contains embedded JavaScript that utilizes eval() and unescape() functions, indicative of obfuscation. The critical CVE_2009_0927 heuristic firing confirms the exploitation of this specific vulnerability via a multi-marker percent-array encoded JavaScript. The deobfuscated JavaScript streams suggest the primary intent is to download and execute a secondary payload, aligning with common exploit kit delivery mechanisms.

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` `9c1668f0fb35c12a0cac8433d0b3651960d5712f7b82354695ac6248867d220f`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	2827 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).
`javascript_obj111712_001.js` `db9fa03ffe1b57736cd71d948e74ba0a9ce4e827ac1c6b58c86d8a3e10024d07`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xCCF	15622 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` `0f77e0a1564b2cf99253e3e0f55abffad8a641ab84e395096e33e6dc3c1e91c4`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4A0B	1790 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` `151975038ba53191e6d6af119e32f72104f26a35b98083fa208151e2adee5c09`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xCCF	1536 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` `16c072d78a92abae77ac0e566096831da670dab7b81ed65d9f54e2f6d9dc469c`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x4A0B	104 bytes
`legacy_pdfkit_stage_002.js` `92637bb1161d4d774c4867296926ec53835ef1d4ccbd20bb4834f973c6e32d0a`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xCCF	1641 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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