PDF malware analysis — malicious · 58a1deb65845bb66

MALICIOUS

PDF

21.3 KB

MD5: c6a52f6828f1b12535bc92570ef4c4b1 SHA-1: 95b159ca48a652edbe9c88e946c7dc26d860ccd3 SHA-256: 58a1deb65845bb662a1047eb7da832295c51056f86e092041efd6f96f4b1e717

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 the CVE-2009-0927 exploit (Collab.getIcon). This exploit is designed to execute arbitrary JavaScript within Adobe Reader. The obfuscated JavaScript streams suggest an attempt to download and execute a secondary payload, a common technique for initial access.

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` `22e36d8c7f0e39340538ff5479aae3a18cbb2701187f4b49b75b904903e25c18`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3551 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).
`javascript_obj111712_001.js` `ab7a1475ec635c05e1c01239f35f7ff21654c2f2d7d6789a1ab1a552274f49e5`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xFA3	15845 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` `ec70f904fdda718234fdafb890db861ec789283530d7f90df719328c1d9620b7`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4DBE	1820 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` `42c6e0dfc1b4e08e336adc8028ccac82b04e3e6e9e4d4a4ebc532ab6cd132eec`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xFA3	1520 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` `1397a77c63e5e8be02a059fd3c671fb708b92cb64d00ded4f2045e71093dec16`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x4DBE	99 bytes
`legacy_pdfkit_stage_002.js` `18dd78865cd73c9ec021416354ea6415fc0491bd261a790f828b79bea889b3e6`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xFA3	1620 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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