PDF / .PHP malware analysis — malicious · c6624c8aab96afd9

MALICIOUS

PDF / .PHP

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

MD5: 7da28adc89c54a918f73502b2bfd893b SHA-1: df975faf66c0760eb77b03f469b7dd95ed0e89c3 SHA-256: c6624c8aab96afd92cb4354f83a4be8826262e4bb7e8e9ffce30d3ab41fd4f8b

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link T1027 Obfuscated Files or Information

The PDF file contains multiple embedded JavaScript streams that are heavily obfuscated using `eval()` and `unescape()` functions. Critical heuristics indicate exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659, which are known to be used for arbitrary JavaScript execution within PDF documents. The deobfuscated JavaScript likely downloads and executes a second-stage payload, though the exact URL or payload could not be reconstructed due to the obfuscation.

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 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `556161602c0f7ad1c9161652c100e3f4a860573bc030f545f36e942e84d8221f`	pdf-javascript-stream	PDF /JS object 32 at offset 0x40E	126 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `3ef22d0f8a8d233bc9e37a04c8c67f49bc3e5bbb22629cedfa58536bfc14f640`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4C5	115 bytes
`javascript_obj0036_002.js` `0f83363fddd51ef21818f69aac179c6f37252cd5acb7e5bf1bdea3e082c39ca8`	pdf-javascript-stream	PDF /JS object 36 at offset 0xF9	118 bytes
`javascript_obj0038_003.js` `ae2b1cd4a371d240f51bdbfd62d2894cac1e5516a780081f27459d3f83eb3c75`	pdf-javascript-stream	PDF /JS object 38 at offset 0xC1C	146 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `3088d9b77323678b8502bb9bb2b02ef3e188745f549dc90fc0bc7e398b7fe8eb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5AB	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` `18db88491ef923151a51eab64ac2da9b54797279cd262da610d25c71b75cab0d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xD38	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` `c5ee9f4fb211241c30adc803c1d072e5075fffac11899f9d736c1176b3b55d03`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x139E	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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