PDF malware analysis — malicious · 1b68a598e190f8a5

MALICIOUS

PDF

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

MD5: b7ba1a82f74a1a6387ad6ac56946dd0c SHA-1: c85ddade71975c5613836a2b1b0e4b14ce401d73 SHA-256: 1b68a598e190f8a5bce503fc91ae80b42dd7a14bd6551e016ba01e2d0d5c2c7a

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript 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 to execute embedded JavaScript. The deobfuscated JavaScript files suggest the intent is to download and execute a second-stage payload, although the specific URLs or final payload could not be determined from the provided evidence. The file is classified as malicious with a high risk score.

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` `fbbebfc22289831246afe1c7f3bb59795e30116a869fd81bb7f025b928ddbd24`	pdf-javascript-stream	PDF /JS object 32 at offset 0x2ED	236 bytes
`javascript_obj0034_001.js` `3dd7ac4f6761cedf5956c1d5c64e7bd957f14125c993d79df1dd0fe35dfddb88`	pdf-javascript-stream	PDF /JS object 34 at offset 0x3D1	317 bytes
`javascript_obj0036_002.js` `174d12fb2d4c232e0c6facb190463036e9c7ecedfcc669d971f54805dcb00ad7`	pdf-javascript-stream	PDF /JS object 36 at offset 0xAC	172 bytes
`legacy_pdfkit_stage_000.js` `8eeeea4e231fe3ba8b79434c13d2000ed00c1f5a9b039090f0a07e8f3d940d1b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x4FD	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 0xA8D	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 0xFF8	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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