PDF malware analysis — malicious · cc45ad3ea8bdd9e1

MALICIOUS

PDF

5.1 KB

MD5: 08f4a5cbf43a193309df68d57d66ed03 SHA-1: bc5c013dabb5b241f4ac56a3abe05ef65c768659 SHA-256: cc45ad3ea8bdd9e19fbc6afd963ea5aa7ac57557c11870fbaedef1056256ee08

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EVAL and PDF_FROMCHARCODE firings suggest that the JavaScript is obfuscated and uses eval() to execute code, likely to download and execute a second-stage payload. The extracted artifact 'javascript_obj704861_000.js' is the embedded JavaScript. No specific family could be identified, but the delivery mechanism is consistent with common malware distribution techniques.

Heuristics 5

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. (matched inside decoded stream)
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_obj704861_000.js` `0d4dbd34f19d0c72cbce58489f803cf03547fa7aa9b077a82326e60bf849eb14`	pdf-javascript-stream	PDF /JS object 704861 at offset 0x13A	8383 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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