PDF / .DMP malware analysis — malicious · 4e5f3c2ee0852192

MALICIOUS

PDF / .DMP

3.8 KB

MD5: aec3bae062fb853e4865d3620fecadb8 SHA-1: cb620a1303fbc1ba9be6bcbfed11ec0be7a33923 SHA-256: 4e5f3c2ee08521927c162c37287553f8908d080a793f9ae8fa0c74059934ebb2

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_EVAL'. The 'PDF_EVAL' firing specifically points to an eval() call within the decoded stream, a common technique for executing obfuscated JavaScript. The presence of 'String.fromCharCode' further suggests code construction and execution. While no specific URLs or network indicators were extracted, the script's nature strongly implies it's designed to download and execute a secondary payload. The obfuscation indicators noted in the static triage also support this assessment.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `14e39f3e4506904fce2261f87277fbc84dc1dc8599ee7bdea7d5a613791c0bd9`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x197	4809 bytes
`javascript_obj111712_001.js` `bf78fc19b5458382194312e3ce9db57f5b914e7b482d18c372d80428699f25c8`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xD48	522 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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