PDF malware analysis — malicious · 2b1156f7071bd45d

MALICIOUS

PDF

35.5 KB Created: 2009-05-01 21:21:45 Authoring application: tvEeSFCPx (via NeTSnrx)

MD5: d65664ce693f76e1786e6ee5a38dc20b SHA-1: 2c804e84f2ad2c8b042fd1b1371e2f2bdade8ec9 SHA-256: 2b1156f7071bd45d946d014e14116ca61bdd1f358f89abc0c72fa26b7c53e9df

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript streams, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. High-severity heuristics PDF_EVAL and PDF_UNESCAPE suggest the JavaScript is obfuscated and likely uses eval() to execute arbitrary code. The presence of two large JavaScript files and the use of eval/unescape strongly indicate that the script's purpose is to download and execute a second-stage payload. The authoring application 'tvEeSFCPx' and the date '2009-05-01' are noted but do not provide specific family attribution.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `fa37c8c33907fb88aa912bbdea66c0dbcfaa05f9d73d4f89ba326443fe3b21d5`	pdf-javascript-stream	PDF /JS object 7 at offset 0x215	35126 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `a5efd2dd77d3ba085581eb7b2639bafb9df3c23415b046d1ce62ab20cde32a03`	pdf-javascript-stream	PDF /JS object 7 at offset 0x215	35039 bytes

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