PDF / .PHP malware analysis — malicious · 2deaca3e2d2ebfe1

MALICIOUS

PDF / .PHP

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

MD5: 30fbf50367957d050a39e6c09cb96f29 SHA-1: dcb02e9a017a574f43ae55a9ca9ca2f3cc2f5678 SHA-256: 2deaca3e2d2ebfe1b79ad95d8fd059a7f1728e9d099ac14458edc4dfc1116234

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 (media.newPlayer), CVE-2009-0927 (Collab.getIcon), and CVE-2007-5659 (Collab.collectEmailInfo). These vulnerabilities are leveraged through embedded and deobfuscated JavaScript, which uses `eval()` and `unescape()` functions. The script's likely intent is to download and execute a second-stage payload, although the exact URL is not directly extractable from the provided evidence. The file type is identified as PDF/.PHP, suggesting a potential web-based delivery or disguise.

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` `77aaadbf87cc10dd4d2554e9cebe6745b0f43502906a870118135475e49805cf`	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` `219bc3e9d9accab106e870920c4fb8ec46ef0b25c846c4a96f9a7fd8e299ef8f`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4E2	136 bytes
`javascript_obj0036_002.js` `e8f0398b46039972f31a2c405c761a30bbc7757dd59c57c6e92f761cc74fd2d9`	pdf-javascript-stream	PDF /JS object 36 at offset 0x107	153 bytes
`javascript_obj0038_003.js` `4d5fa696584d964fceeb5ddd5c8c351d401c04517dcb6755725b21f3965b3b1b`	pdf-javascript-stream	PDF /JS object 38 at offset 0xC47	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` `19215856681f49d47db690170edf903bb6f8d75e0f950eb6a25bc23e844e154e`	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 0x5D7	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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