PDF malware analysis — malicious · 46831bd53c8392d1

MALICIOUS

PDF

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

MD5: c49e9adbbe47960e2835f1c49ddeeeac SHA-1: dfa96ed24bc1f55899497f316a1ac2a9b5cc581d SHA-256: 46831bd53c8392d10d76a3095fbb724ac2bea3bed94c13acd0c17b53c785125a

278 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: JavaScript

The 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 and obfuscated JavaScript, which is then decoded and executed using eval() and unescape() functions. The primary attack pattern involves exploiting these PDF reader vulnerabilities to achieve arbitrary code execution.

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 8

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `9c871dd4db33b58abb4fb63e641a49a1208d490aa4c900c5d42b8aa886ddbecf`	pdf-javascript-stream	PDF /JS object 32 at offset 0x420	132 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `39c0d1760369a323a39c67f6a441effc734d0c19c0d014087c7e34cff4a9e3b2`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4DE	133 bytes
`javascript_obj0036_002.js` `a759fd0aa8454de9c93afd6435f74ebe99483a1250a52952bd5c09f9bd121c0b`	pdf-javascript-stream	PDF /JS object 36 at offset 0x105	148 bytes
`javascript_obj0038_003.js` `58c3193ea03d6760a2c845ff91d0b23f768ec4bf7d321c7b862095d7ee979405`	pdf-javascript-stream	PDF /JS object 38 at offset 0xC41	170 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0078_004.js` `df6c9f756fceee48ab77a8f5d31ea4a96477fe074a1be35f0aa86a025465e107`	pdf-javascript-stream	PDF /JS object 78 at offset 0x7C	43 bytes
`legacy_pdfkit_stage_000.js` `b2e581467bf11f1cda7841f535399ca8cf5f18b4ea8a9b313116d79eb6dd6a58`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5D1	1622 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` `8c3b226331a8a2d232a4cc72b974630e50e33b5f5de98e2fa80a3a31881fc4c2`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xD76	1788 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` `067232e5360e076dc3d6d89d14ad6e56bd2606d96e516099987b41ec6705bbdf`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x13DC	2914 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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