PDF malware analysis — malicious · 7c851e850dbe69a4

MALICIOUS

PDF

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

MD5: 67c05fbc2bef264b5922995987bd91b5 SHA-1: 7120b5f142e0d18fbf6698a49abc8d80ea494377 SHA-256: 7c851e850dbe69a4c9d3e35e449e6d7e0b2c2b7246fa5dd4734e82d661c15d90

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell 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 exploits leverage embedded JavaScript, which is further evidenced by the extraction of several JavaScript files. The primary function appears to be the execution of this JavaScript to likely 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` `01ce05b0dfe9b5086312768e5b4eb6018ad5306af9e05895b647c642bd095d0a`	pdf-javascript-stream	PDF /JS object 32 at offset 0x33E	268 bytes
`javascript_obj0034_001.js` `af6ab012ea751cb311c835bf24108a37914667006c9893c5b93c41f154b76f59`	pdf-javascript-stream	PDF /JS object 34 at offset 0x432	315 bytes
`javascript_obj0036_002.js` `f9ab59a7c627d32d1b860b36bdf36866e7ca8b30558a9f39565d566d01a38761`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	218 bytes
`legacy_pdfkit_stage_000.js` `1a4d3e11f4b4e9c43e765782c2f15d50966982937a9e006ced3599c49d8a7609`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x56E	1646 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` `3d7fa66ff633bba80853e5031ddaa1e782a19bd465391af4c86cfb9db89c89b3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xB09	1812 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` `6790ba8f0c3412704f388556a1321feea2f1fb60aeeb544a3843a049cd662024`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x108A	2962 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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