PDF malware analysis — malicious · 416cff4c24f43367

MALICIOUS

PDF

2.9 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 4779b6dfc70bc146a0894c04ac711319 SHA-1: 3eb61c7f988f6f73b1871936413b4c1a8f8441e4 SHA-256: 416cff4c24f4336729ff04f2abdb1c80eb818ae40a2d12d70149225f221a5fbf

98 Risk Score

Malware Insights

MITRE ATT&CK

T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, PDF_EVAL, and PDF_UNESCAPE. The JavaScript stream, named 'javascript_obj0013_001.js', is heavily obfuscated, suggesting an attempt to hide malicious functionality. The presence of eval() and unescape() calls further points to code execution and deobfuscation. This pattern is commonly used to download and execute a second-stage payload.

Heuristics 5

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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `785b1bd178462edbebcc9f9f0ff814ea1f507decf509b1f36114b447154f098c`	pdf-javascript-stream	PDF /JS object 13 at offset 0x365	4215 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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