PDF malware analysis — malicious · db16ba4b3029244b

MALICIOUS

PDF

3.5 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe (via Notepad)

MD5: 5948462211d00c9cec468fd194e76c5f SHA-1: f152202769725a0f8bdfc104e17e3521dd1d05cc SHA-256: db16ba4b3029244b4d900648e443a3f0c71bef835987c44476d1f3817a1c629d

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream utilizes eval() and unescape() functions, suggesting obfuscation and dynamic code execution. The extracted artifact 'javascript_obj0006_000.js' is likely responsible for downloading and executing a secondary payload. The high risk score and unknown exploit score further support its malicious nature.

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_obj0006_000.js` `6025f92e411507cac9a3ed620b31129b2a70e35ef2e8eb23c414fd6ebdafc800`	pdf-javascript-stream	PDF /JS object 6 at offset 0xB16	189 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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