PDF malware analysis — malicious · 9a2168c07cec98de

MALICIOUS

PDF

14.5 KB

MD5: 89dd1c16501198b586b7f4bddaf0682c SHA-1: 6fb2cbe83043755a004a5ec672d7407ddbc3ed0a SHA-256: 9a2168c07cec98de2c26127390473cc4905c65081fe23cea9fd89b0939705b35

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The embedded JavaScript stream, named 'javascript_obj0076_000.js', is likely responsible for executing malicious code. The ClamAV detection 'Pdf.Exploit.Dropped-94' further confirms its malicious nature, suggesting it's designed to drop and execute further malware. The confidence is slightly reduced due to the lack of explicit URL or command execution details within the provided evidence.

Heuristics 6

ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape 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_obj0076_000.js` `c28effae366bd4b2a63fe29aea090a07947ae4e73aa9efc1cf87e16e006e7288`	pdf-javascript-stream	PDF /JS object 76 at offset 0x38C2	144 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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