PDF malware analysis — malicious · 25f038d68de61e7e

MALICIOUS

PDF

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

MD5: 21c268ec9c80736af4b659e432466ad3 SHA-1: 221e6d40c6676893ea8060061a56808f5fdc2c58 SHA-256: 25f038d68de61e7e1cc205eedba3d43ad305b529a4bb53bc369aa1a8b318e631

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 CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged to execute embedded JavaScript, which is likely used to download and execute a second-stage payload. The presence of deobfuscated JavaScript files further supports this attack 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` `9242fedcefd584a28d26c765d1d5c4ba1dae0fd3c320f2863ab2b11746f4c156`	pdf-javascript-stream	PDF /JS object 32 at offset 0x39E	232 bytes
`javascript_obj0034_001.js` `a9fc3139f99a4899e62fdd2c7e1d8fbba7dc991716a88cc157f70006fb02a7c1`	pdf-javascript-stream	PDF /JS object 34 at offset 0x48A	382 bytes
`javascript_obj0036_002.js` `7090b97e2be80bd5a0d42c0189aa47fa6faa55cb607ba2bb5189ff387523bdea`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	269 bytes
`legacy_pdfkit_stage_000.js` `32c8ccc02d7b8a3d45089d22352f16e98cae607864d481b60ddf9482d144e320`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5F0	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 0xBA6	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 0x1139	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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