PDF malware analysis — malicious · 4c63e04d5c0358fc

MALICIOUS

PDF

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

MD5: aecca5c04d44f49213a39eafdbd25b3d SHA-1: a6166110ac5eb916a3dd8030e5a38bcf7d8e592d SHA-256: 4c63e04d5c0358fcf1f8ac327d6e5a2e4015278d6001c588700f8aee8f323bde

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript streams that exploit multiple known vulnerabilities including CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. The heuristics indicate that the PDF launcher concatenates information fields, extracts characters at a fixed stride, and evaluates the result. This process is designed to execute arbitrary code, likely for downloading and executing a secondary payload. No specific family could be identified, but the exploitation of multiple PDF vulnerabilities points to a downloader or dropper.

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` `a9ae0ff64f81010b540ad920e6f6908f64763a3e7a59e675eeedfe126c17f84f`	pdf-javascript-stream	PDF /JS object 32 at offset 0x301	241 bytes
`javascript_obj0034_001.js` `e61821035dcb9f62bb5780dc1a10de1642c8796613637a966c81cac1da23ab24`	pdf-javascript-stream	PDF /JS object 34 at offset 0x3EF	367 bytes
`javascript_obj0036_002.js` `6fa3b46a6df22d4bd45034d0f2f5241cc4c6ac3ab764780e03036db0a8633520`	pdf-javascript-stream	PDF /JS object 36 at offset 0xAC	202 bytes
`legacy_pdfkit_stage_000.js` `a83ef2e5135b0a1f318cc309883f78d75ddda0a26109b79528f7b832c4bbbe23`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x525	1675 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` `39c9bd833cbbf0ea34221591edacb9b2de0fba2b69bcb0ab01498285c7a93a44`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xAC1	1833 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` `0cc6c1aceebc8b6b04e97072fc91c4c6a94299689bc720d7fa99cb10a97e712e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1042	3015 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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