PDF malware analysis — malicious · 368f0fc82101f882

MALICIOUS

PDF

6.0 KB Created: 2009-01-35 62:12:26 Authoring application: Adobe

MD5: c554940aca668e1e61665a2041c3dbaa SHA-1: 6c2d4289bf064269e7f819c3fa1218437b139d99 SHA-256: 368f0fc82101f882385bf9027c8a79b91633a4381fc80d93f514f693d6a7b988

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains multiple JavaScript streams that exploit known Adobe Reader vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659). These exploits are designed to execute arbitrary JavaScript code. The deobfuscated JavaScript files indicate a multi-stage process, with the initial PDF likely serving as a dropper for further malicious activity, such as downloading and executing additional payloads. The exact nature of the second-stage payload could not be determined from the provided evidence.

Heuristics 6

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
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)
Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
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_obj0032_000.js` `6f799b16a11ab334a4aa8ccd7e74dc1b1aaf7480c359cd7882491d802f1609aa`	pdf-javascript-stream	PDF /JS object 32 at offset 0x301	241 bytes
`javascript_obj0034_001.js` `291e89a16e83dd5abfa4d2e4dca4ca98ce2382c62ce7647f3135062163713c5b`	pdf-javascript-stream	PDF /JS object 34 at offset 0x3ED	367 bytes
`javascript_obj0036_002.js` `ef70603341faf0391fea83c50d4e740a0ea1342acec3721b495de0d036d8a01c`	pdf-javascript-stream	PDF /JS object 36 at offset 0xAC	202 bytes
`legacy_pdfkit_stage_000.js` `a83ef2e5135b0a1f318cc309883f78d75ddda0a26109b79528f7b832c4bbbe23`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x524	1675 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` `39c9bd833cbbf0ea34221591edacb9b2de0fba2b69bcb0ab01498285c7a93a44`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xAC0	1833 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_002.js` `0cc6c1aceebc8b6b04e97072fc91c4c6a94299689bc720d7fa99cb10a97e712e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1041	3015 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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