PDF malware analysis — malicious · 2448103abc3616cc

MALICIOUS

PDF

24.2 KB

MD5: 919ea0dbf406aa7ff47f7a8383fac250 SHA-1: 2346310c85184085ba897342bce8797efdd12f17 SHA-256: 2448103abc3616cc2b1411f470c221d5d622f41d3e21b654c46fa62f58f8f3f0

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that utilizes eval() and unescape() functions, indicating an attempt to obfuscate and execute malicious code. The critical CVE-2009-0927 heuristic firing confirms the exploitation of a known Adobe Reader vulnerability via the Collab.getIcon method. The deobfuscated JavaScript stages suggest the primary intent is to download and execute a second-stage payload, though the specific URL or final payload could not be reconstructed from the provided evidence.

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` `b2418463ad1ba044c28996160d17ac1abd3a47cc3bf0fd828e72ff446a3d1ab2`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3373 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` `0bda1b2dd817204cbf41c21d043ab53db18e5022cd8f0f50362d7922e7b79d9f`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xEF1	19027 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` `def45de0e11bf32627a3fcbea5e4acb4bdbbb1ddfdbfc200a78763449b7ba390`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x597A	1741 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` `73ada545fdc6b6a0067a410dbf9b91db57cd8c646b38627ba5ef1b9e6f759789`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xEF1	1525 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 0x597A	100 bytes
`legacy_pdfkit_stage_002.js` `e7abbaf7a5b0f3388d666f7643601fb326ed252c2a6310ba7a56c4a06a7d82d8`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xEF1	1626 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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