PDF malware analysis — malicious · af86a3427f470eac

MALICIOUS

PDF

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

MD5: 2291052dda7584c10ab42554d0b672c3 SHA-1: 6b7e7a39a53de0dfe794a643715c6a888bdef85c SHA-256: af86a3427f470eacef7bbb03cec4c3590602e7d18fc347c8275a7c057215d5d5

190 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript streams that utilize `eval()` and `unescape()` functions, indicating obfuscated code execution. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of multiple JavaScript streams and the use of obfuscation techniques point towards a dropper functionality, likely designed to download and execute further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7293378-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7293378-0
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` `227cf1af21a711be49571db0eb91a23e634602dc1d8bcb34a7653677786eed3c`	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` `d4b9c39e8d8dfac4fc1183c8109b49e5c270a593b0f4843bba066cf33e5056f1`	pdf-javascript-stream	PDF /JS object 7 at offset 0x215	35039 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.