PDF malware analysis — malicious · 376806a758d40063

MALICIOUS

PDF

13.2 KB Created: e1svrt Authoring application: Adsfgddfobe (via sfgasdfgsd)

MD5: 4dcd906057c64c475078ff7e656fadda SHA-1: dcdcafe8e21b3139f64b4ea24b9a2d228c7a999a SHA-256: 376806a758d4006377a2dabcb043831a13d0f991b673b929721426f593a68d15

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript streams that utilize eval() and unescape() functions, indicating obfuscation and potential malicious code execution. The heuristics suggest that this JavaScript is designed to exploit PDF vulnerabilities, likely to download and execute a second-stage payload. Due to the obfuscation, the exact nature of the payload and its ultimate destination could not be determined.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0015_000.js` `9d70141af3a822acccc264ef07edff74fb35057902ba021de6dd368c8575e640`	pdf-javascript-stream	PDF /JS object 15 at offset 0x14F	251 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0017_001.js` `eb38f21f9bedfa692973d5040fa72403c33e1b7416e5315eba9178a06cc6f506`	pdf-javascript-stream	PDF /JS object 17 at offset 0x3193	269 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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