PDF malware analysis — malicious · a7496a408d9b9c13

MALICIOUS

PDF

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

MD5: 294a351f0b690974d1e692b729e07c98 SHA-1: 65e37c684c47526f4109b6f7ae3982893ce7ab66 SHA-256: a7496a408d9b9c13b9adf66a583e48897aaa773c5709044ab5e9be4c28c13799

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF document 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 script's likely intent is to download and execute a secondary payload, a common technique for initial access and further system compromise. No specific malware family was identified.

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` `711f5e89314e38f4e5b5288535e3de03092de64e150261803b365b513d8b14ce`	pdf-javascript-stream	PDF /JS object 32 at offset 0x420	132 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `2e57ae188c8232fb512ce5f7a60bef01cdbbabb72f6a0584837a72f8dc37e812`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4DE	133 bytes
`javascript_obj0036_002.js` `dea275768ed337d84f6b837a315875af95966bdbc9c1fc8a1ccd2a92b22d4a5a`	pdf-javascript-stream	PDF /JS object 36 at offset 0x105	148 bytes
`javascript_obj0038_003.js` `e915d3202f6b3ef343054fbdef628b8017d2b6a5fcb0359b73100cdc10f0cffa`	pdf-javascript-stream	PDF /JS object 38 at offset 0xC45	170 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0078_004.js` `3c7ec7bf098370ee3f59b657bc30cfb2ade8c138e3a1d9e468cb4274dd8c5500`	pdf-javascript-stream	PDF /JS object 78 at offset 0x7C	43 bytes
`legacy_pdfkit_stage_000.js` `899000d78e4eda7aa1f9804f26c7d8371fa6f4f5fd8ca457fd1e3de966816030`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5D1	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` `78986909e56829844563e54776fe91a1e9f557d0ece9a8a2e916da8dfe95a5b8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xD78	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` `f51adc71cb7cf2253db4eb2722a9609c8f25aeca24c9a1e5ceb08c43f2dfe161`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x13E3	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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