PDF malware analysis — malicious · eb952fc654bfa54b

MALICIOUS

PDF

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

MD5: 47d130f1dc49227ab72cab93db8a7c79 SHA-1: 93dcb8157db97c9be7607f243a83a785dcbea3d2 SHA-256: eb952fc654bfa54bae005f17c8f3b1aaf277eeafac6844a009e1153ec802a27f

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The 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 uses `eval()` and `unescape()` functions. The script's likely intent is to download and execute a second-stage payload, a common technique for initial access.

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` `d47288ec3792cff02e29b399daf66ba84d03b8488e3be463be39c2c74f2fb9d8`	pdf-javascript-stream	PDF /JS object 32 at offset 0x417	129 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `867f2b5a110655de89144c6af28caee7f78d38a7c592079d4081ef024ee25bfd`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4D2	124 bytes
`javascript_obj0036_002.js` `0f4615e3f5e0108fb54b1322e52e965a0d059d97d106be7cd31aff6690b765a8`	pdf-javascript-stream	PDF /JS object 36 at offset 0xFF	133 bytes
`javascript_obj0038_003.js` `bae26dae2434e87dd4c7c614f16dc38eedc11925682a66ae4a7b3d4c532e89e1`	pdf-javascript-stream	PDF /JS object 38 at offset 0xC34	158 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0078_004.js` `c1413e297d9e5091c676c5edb5c0779179248bc9725e1344492edb6357342cde`	pdf-javascript-stream	PDF /JS object 78 at offset 0x7C	37 bytes
`legacy_pdfkit_stage_000.js` `4e15ea6c2c2faea130bf31c2e1be7f711501f7702d58e8095186da1967b9a00e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5BE	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` `a0ed2cc2a800de0e8843beba1a79e82d8f302a17931d73a34afc93821bf97bd9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xD5D	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` `e0113689fb857ba5e5685308c0db0971ca65eaea845643812592e365bc049823`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x13C9	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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