PDF / .TMP malware analysis — malicious · c26f469afa4e50bd

MALICIOUS

PDF / .TMP

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

MD5: ab05e88272b7346ae19a72d89bf6e6f8 SHA-1: 919cc354d89fecadb85d683ec22bffd33f380df8 SHA-256: c26f469afa4e50bddd118e9788bb701bb91302e9f21a874e9936dbd7a1c5ef3a

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The sample is a PDF file that leverages multiple critical vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) to execute embedded JavaScript. The extracted JavaScript artifacts, particularly 'legacy_pdfkit_stage_000.js', 'legacy_pdfkit_stage_001.js', and 'legacy_pdfkit_stage_002.js', indicate a multi-stage process likely involving deobfuscation and execution of further code. This pattern strongly suggests the PDF is a dropper designed to download and execute a secondary payload.

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` `f44185d89894bf4926a78067c1bbea0da0b9fcbaeafab34d7f5c840759757617`	pdf-javascript-stream	PDF /JS object 32 at offset 0x311	245 bytes
`javascript_obj0034_001.js` `54b85d034df02d3543052291c3deada8fbb7d13916e7df614b0bf40218264633`	pdf-javascript-stream	PDF /JS object 34 at offset 0x401	407 bytes
`javascript_obj0036_002.js` `a7979867dcf44cfacb53426af4712b888c80d52e8998ec0d96b4d22b7287e330`	pdf-javascript-stream	PDF /JS object 36 at offset 0xAC	226 bytes
`legacy_pdfkit_stage_000.js` `73da873531a4746bb19470afff326f821fcbb280b91605764cc793b16d853ba5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x540	1657 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` `a6ae0ecba3e216f4ba31a010622497210977477d40a49a010cfb2698fec3e9a4`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xAD6	1809 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` `5bf3a7a59c2bde72baaf2a76e9e294afa36a2afa273a1e6df252251981fd8b95`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1049	2967 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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