PDF malware analysis — malicious · 934e27a949226f66

MALICIOUS

PDF

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

MD5: 94c15759c116d91e2dbe76225723529f SHA-1: 901dc629acad28c510212a7bedcebd457b01aec1 SHA-256: 934e27a949226f66e27097e2650488eed0f9c93fb618c7946e3436d6a3e5ffac

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

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 uses `eval()` and `unescape()` functions. The script's intent is to execute arbitrary code, likely downloading and running a second-stage payload. The presence of multiple exploit-related firings strongly suggests a malicious document designed for exploitation.

Heuristics 8

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)
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 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `1ed9326689e7b9a1923c77c7f03541c6c198a49a736af808a0ad0ed523a373b0`	pdf-javascript-stream	PDF /JS object 32 at offset 0x3A5	117 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `ef13afb832db5fbe2617fcbc53a40e117594e8e26e726908cd77385a0dceb3e8`	pdf-javascript-stream	PDF /JS object 34 at offset 0x451	108 bytes
`javascript_obj0036_002.js` `2733da8ac7ad0d4ab8b09af041c99496788a503c70d001358083b1266a910f0a`	pdf-javascript-stream	PDF /JS object 36 at offset 0xE5	115 bytes
`javascript_obj0038_003.js` `e6cdbfcf1be66a6ae7b7907395f0e46646521cb721f2e37d2506aaa843e64c0e`	pdf-javascript-stream	PDF /JS object 38 at offset 0xBA0	143 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` `8eeeea4e231fe3ba8b79434c13d2000ed00c1f5a9b039090f0a07e8f3d940d1b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x529	1651 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` `2744ae0eea65d75a9302c7d99ae16814ae90ce5f83379899eaae40106cf446a0`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xCAE	1803 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` `721f67b3bdb69c48ca68104f925923a6e9d73a6161991616a4218a741337c341`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1317	2955 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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