PDF / .IN malware analysis — malicious · 2a0d71fd76d7dd13

MALICIOUS

PDF / .IN

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

MD5: 5c9d99dbae2b4ca6ff3aeecaf1712d0e SHA-1: 20ad1d0f6412e7ff615fcbe553d80d2bf5b552ef SHA-256: 2a0d71fd76d7dd137a929a323c716b7975a6645894631de938149d444cda0ed3

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This 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 is then decoded and executed using functions like eval() and unescape(). The primary purpose appears to be the execution of arbitrary code, likely to download and run a secondary payload, as suggested by the presence of deobfuscated JavaScript streams.

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` `d1d511cf6d3375e9945e6c303d1a9bc1e32ff74c99b40d12df4c3668b4319514`	pdf-javascript-stream	PDF /JS object 32 at offset 0x3A2	116 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `748c22d26f400750d41d257e5476aa46c2d7694d81ef7ce2f312cbd92f3adb0a`	pdf-javascript-stream	PDF /JS object 34 at offset 0x44D	105 bytes
`javascript_obj0036_002.js` `be259e7e9dc2d019e0697200a15ab2014bb3208f83daaabfffca61ee0b1b7adf`	pdf-javascript-stream	PDF /JS object 36 at offset 0xE3	110 bytes
`javascript_obj0038_003.js` `483fa7b6f225448b46e0e4f9c4db2e72bcaa76aff441bb849c1a883c157b0821`	pdf-javascript-stream	PDF /JS object 38 at offset 0xBA8	139 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` `ed66e59926a3546cef4a9238a0e8c00b563fda2099acc4fb84b4bcc52dccf34b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x523	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` `e5ce0d1713047fd1e555b57861343e16db5742e94169d419108cd18b7bee744a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xCB2	1827 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` `11b0feb37b8a12984f26baabc34fbc80d0a962632c5b32e854e2a7eba4701afa`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x132E	3003 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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