PDF malware analysis — malicious · 30decc3c4b3e53dc

MALICIOUS

PDF

17.7 KB Created: 2010-03-16 10:18:46 Authoring application: QErOoA0L (via VucqzKZeDtKF5c)

MD5: a23809ec7d28a23e869f6863d2d0658f SHA-1: 75a00d93d4034fb69efc3cf346cb06e480c3f66b SHA-256: 30decc3c4b3e53dcde1cfee850ba558b61e356ff6a4716c8babbc2bd005f28f6

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a PDF_EVAL rule firing suggests that the JavaScript is obfuscated and likely attempts to execute malicious code. The extracted artifact 'javascript_obj0007_000.js' is also a strong indicator of malicious intent. The script's purpose is likely to exploit a vulnerability within the PDF reader or download a secondary payload.

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.
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_obj0007_000.js` `f637c3e54678d0a6922cfaad9cc0dc3a662ebf4d59e26f42192adc1185d4e55c`	pdf-javascript-stream	PDF /JS object 7 at offset 0x23A	16901 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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