PDF / .PHP malware analysis — malicious · eb8572c57678a994

MALICIOUS

PDF / .PHP

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

MD5: 660eff881e0e14fc65be91a8ccc823a4 SHA-1: 76548ad21db099e16f9c5cf07f27bb1a0c36ff9a SHA-256: eb8572c57678a994b90c49886e2e7ad17266b5b8f1d4ef7ba035b55c6480daf6

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

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, which uses `eval()` and `unescape()` functions. The JavaScript is designed to be executed by the PDF reader, likely to download and execute a secondary payload. No document body text was available for analysis, but the script execution intent is clear.

Heuristics 8

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)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 8

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `e48bbe5816393067a8b5f621b88a5ec4e29b89806b9837effe0f3b0a57d06f32`	pdf-javascript-stream	PDF /JS object 32 at offset 0x424	133 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `222545450e19f7457ba9e066c320099e8efff18a19fe9f2825bd50ea859b0bb8`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4E3	136 bytes
`javascript_obj0036_002.js` `149d29ce2ccb3ec8f41657a52944d872ed977053fe06530efd8a0360ef2aeef1`	pdf-javascript-stream	PDF /JS object 36 at offset 0x107	153 bytes
`javascript_obj0038_003.js` `7f7fd6599f591bc8f1d005a794ae0a34c0a69b175198687fd1892ffb59251441`	pdf-javascript-stream	PDF /JS object 38 at offset 0xC48	174 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0078_004.js` `4fc6f3924665d09cb6f0f85c8725809ff82adfb35ec9c63563a2ee546daec750`	pdf-javascript-stream	PDF /JS object 78 at offset 0x7C	45 bytes
`legacy_pdfkit_stage_000.js` `b2e581467bf11f1cda7841f535399ca8cf5f18b4ea8a9b313116d79eb6dd6a58`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5D8	1622 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` `8c3b226331a8a2d232a4cc72b974630e50e33b5f5de98e2fa80a3a31881fc4c2`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xD7F	1788 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` `067232e5360e076dc3d6d89d14ad6e56bd2606d96e516099987b41ec6705bbdf`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x13E5	2914 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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