PDF malware analysis — malicious · e14d1c5c9d1805a1

MALICIOUS

PDF

20.5 KB

MD5: 1b47c6a1abd5f2f116d87e331eef3b74 SHA-1: 6d4f8c0eed8a93507f218e82447f33a4756817a2 SHA-256: e14d1c5c9d1805a189973868767e71d5fc58408f0761e5006f6868fff282e79e

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF sample contains multiple embedded JavaScript streams, with one critical heuristic firing for CVE-2009-0927 due to the use of Collab.getIcon. The document body shows obfuscated JavaScript code that utilizes eval() and unescape() functions, indicating an attempt to hide malicious actions. The primary intent appears to be the execution of a second-stage payload via the exploited vulnerability, likely leading to further malware infection.

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` `6de8a93b4927f719158c11e59d3356a2ae8f88dfe4333b936f1ca160245430ae`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3466 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` `d47bd8f28b1a2780be364306d8d4ec8402bee5829adfc2091c9de804835e6bdd`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xF4E	15390 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_obj111713_002.js` `cdcd649b7310364a8fd706c78606748454b8ff749f8dd7fccb7f2ff23b92ec76`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4BA2	1502 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).
`legacy_pdfkit_stage_000.js` `6e63db0211906ea6e20382de4ea7f82082467e32ab22d481ab31f199862b6301`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xF4E	1527 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 0x4BA2	100 bytes
`legacy_pdfkit_stage_002.js` `3862a9bd1f3d2f5240270baa44a196a4c7f6c6f3fdd005cbba1b428fdf09fd9d`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xF4E	1628 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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