PDF malware analysis — malicious · d56b25cf6b66fca7

MALICIOUS

PDF

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

MD5: 7367a227d9d2387069fd81193ed8c52b SHA-1: 102b1842b670ff9f2142e7b16199b7f9fa59f979 SHA-256: d56b25cf6b66fca74f985b32f8cfcc07de0b58583aa4048d0d0dace463fdbc83

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 Malicious Link/URL T1204.002 Malicious File

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. The deobfuscated JavaScript files (legacy_pdfkit_stage_000.js, legacy_pdfkit_stage_001.js, legacy_pdfkit_stage_002.js) suggest the primary function is to download and execute a secondary payload, a common technique for initial access.

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` `503ce54994f1205ceb099b97cc1fe5eb984b5680433b8080f5b375ea35978abe`	pdf-javascript-stream	PDF /JS object 32 at offset 0x362	277 bytes
`javascript_obj0034_001.js` `6c3dc63d43557611e37af979c78c4efa4479f7f3f7d793f880bdf2b09b9d829b`	pdf-javascript-stream	PDF /JS object 34 at offset 0x461	405 bytes
`javascript_obj0036_002.js` `e1c89fbc021c34bdcf41a6bd517f87ec18705454cc96df97b42acb69c0bbe0e5`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	272 bytes
`legacy_pdfkit_stage_000.js` `22a6a208648dff6c065cc69c8b36dd18ce75f6c4d5faa906ccd32de67f9d364b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5B0	1694 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` `0c9eb77f8a95e6adabe2102d904fd2e0b695f1892794bbc12ec0dc79d2a3e7e6`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xB6F	1854 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` `2c778b45703aec0e461dc4e723d4e9677a9d407c1d3f906f42412dcd32eef508`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x110A	3046 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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