PDF malware analysis — malicious · a472d3635f017c09

MALICIOUS

PDF

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

MD5: 0c03dc9119193d558d5e88c7d0c964ff SHA-1: e6a1c1a7410f0a4f7bcffe501915a42e079b435f SHA-256: a472d3635f017c09e0f668f7c39c7a5e3f4eed5fb0db893ad5dfd422f673cae0

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link or Macro: User Execution: Malicious Link T1204.002 Malicious Link or Macro: User Execution: Malicious Macro T1071.001 Web Protocols: Web Protocols T1566.001 Phishing: Spearphishing Attachment

This PDF document exploits multiple known vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) through embedded JavaScript. The JavaScript utilizes `eval()` and `unescape()` functions, indicating obfuscation and likely the execution of a secondary payload. The primary attack vector appears to be leveraging these specific PDF exploits to achieve code execution.

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` `38208891faabcabe8c8656a2d36dc50547308a60d1d06b307de470db97e06436`	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` `4603703086551160d1a30cb657bdddbf506ebfdb4f44da701e3e0c3aa9a91e7a`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4E3	136 bytes
`javascript_obj0036_002.js` `61c48240ad23a2c58f5eb9507baa87ccccfab0cb2011150265152e35b214d46d`	pdf-javascript-stream	PDF /JS object 36 at offset 0x107	153 bytes
`javascript_obj0038_003.js` `c59c3aca9354316a23c988bf12819e33e6c43d678baf73f69c9b9a85ec49ef02`	pdf-javascript-stream	PDF /JS object 38 at offset 0xC4C	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` `29f30bdbcb4eccfdc5778fb7b8d3685acf62374a37f43ce59fcbab8cfda04821`	pdf-javascript-stream	PDF /JS object 78 at offset 0x7C	45 bytes
`legacy_pdfkit_stage_000.js` `388a11ed75ee37a2282371ddd945b4f18f7045c3e3a64d50efc59e2ebb12e591`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5D8	1634 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` `df79ec34d6b7149e12bcf1b7811c9671fd070e36b3716189db2ce89e303e4526`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xD85	1800 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` `2866d03a0eb2d22efa4869b865bdcb9e19387c2a63756ad4b25a4fad3cbd942b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x13F0	2938 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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