PDF / .PHP malware analysis — malicious · a499021436a78345

MALICIOUS

PDF / .PHP

6.3 KB Created: 2009-01-35 62:12:26 Authoring application: Chat

MD5: 2579102f7518562b120d6bfe387cc51e SHA-1: 8b5658d528510307eb89c7a2e7cee3036c42115a SHA-256: a499021436a78345a4fcbc719704a52877f894087af8a2e5346fa2a595b4f119

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple critical heuristic firings indicating the exploitation of known PDF vulnerabilities: CVE-2009-4324 (media.newPlayer), CVE-2009-0927 (Collab.getIcon), and CVE-2007-5659 (Collab.collectEmailInfo). These vulnerabilities are leveraged to execute embedded JavaScript. The extracted JavaScript files, particularly legacy_pdfkit_stage_000.js, legacy_pdfkit_stage_001.js, and legacy_pdfkit_stage_002.js, suggest a multi-stage attack involving obfuscated code, likely to download and execute a secondary payload. The file type is listed as PDF/.PHP, further indicating a potential web-based delivery or compromise vector.

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` `584d237e9b54f2b42799bb2deee25aa65a48a5fe20cc4f77cf401c4a672984a0`	pdf-javascript-stream	PDF /JS object 32 at offset 0x3B1	237 bytes
`javascript_obj0034_001.js` `7c435295d61a84802902628f337e2c689981114db440eca41f4dcdbe9f45af48`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4A2	422 bytes
`javascript_obj0036_002.js` `67a0d1f649d2b9405b7954a8e8eecf781baab09953d85f7d17c4c07a9bb1aa49`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	299 bytes
`legacy_pdfkit_stage_000.js` `32c8ccc02d7b8a3d45089d22352f16e98cae607864d481b60ddf9482d144e320`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x615	1676 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` `2b715017cc3e176aff72cc16fd2663f4ac29909b5f09dc353e93ce48c1a54a1c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xBCB	1836 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` `f560041f1cf22c93255bd90dba465c5a79c20a98cf744b26545ad4620338434a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x115E	3010 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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