PDF / .PHP malware analysis — malicious · 9cee5ff54b813dab

MALICIOUS

PDF / .PHP

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

MD5: ea140bcfd048149df0625e0cd2329fc5 SHA-1: 819ea51ccb0712670d4be75f374aefd98dd3eb0a SHA-256: 9cee5ff54b813dab3f6262b2be6a9016a71455f43d9434e444ecf0d37f5e7b75

338 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged through embedded JavaScript, which is further obfuscated using `eval()` and `unescape()` calls. The embedded JavaScript is likely designed to download and execute a second-stage payload, as indicated by the ClamAV detection of 'Js.Exploit.Shellcode-18' on an extracted artifact. The file's structure and exploit vectors point to a malicious PDF designed for exploitation.

Heuristics 9

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)
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `3422c179263b90a4071853cb6c9cb3721f5d781f40905100844b7cc9ba102887`	pdf-javascript-stream	PDF /JS object 32 at offset 0x3C1	156 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `fbcc0a6d00ded04fa3fed938dcc9508c6a386941459517be28609b696d603efd`	pdf-javascript-stream	PDF /JS object 34 at offset 0x492	104 bytes
`javascript_obj0036_002.js` `2570586fcba5d8959512879e07c6221424a1ef97c4c13e419f68f30a89c59efc`	pdf-javascript-stream	PDF /JS object 36 at offset 0xE3	110 bytes
`javascript_obj0038_003.js` `35510abe0c31ec396c6799dc68ab039e5f6cbd89aac9a925779ab07d19a7ab90`	pdf-javascript-stream	PDF /JS object 38 at offset 0x1398	130 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `edfd54d0b66050442183eedca77f9bb16f1db4b3499274e22867b17dca72f436`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x569	6339 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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