PDF malware analysis — malicious · 21519e0653902ff3

MALICIOUS

PDF

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

MD5: 60f458d71b85d7de59b94e2880c0ec6a SHA-1: 5471107be64759287e4ef4a2c3df4ff6b4bd27f2 SHA-256: 21519e0653902ff3822bcc846c5a85eaba906ed114e6963cbb2f087e25edbf6a

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript streams, with heuristics indicating the use of `eval()` and `unescape()` for obfuscation. This suggests the script is designed to execute arbitrary code, likely to download and run a second-stage payload. The obfuscation makes it difficult to determine the exact functionality or reconstruct specific IOCs from the provided data.

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` `5caf5074ba2c38c15d61d0958f63b649cda4b4c8dc3cf6f5e9c84016592b6995`	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` `0fc93d3cb5e49a24db5926a3827337f286d1a3c51d7607c51e9a6b2a58afc6d0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x215	35039 bytes

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