PDF / .PHP malware analysis — malicious · 798ff310fc39d58d

MALICIOUS

PDF / .PHP

3.9 KB

MD5: d3548e1cbab3fa901b0a04f886487498 SHA-1: 10f5c99cb8f73672a251fa6a027ee0f7d31f7c37 SHA-256: 798ff310fc39d58dd8829c1414ce101d66ac5ca443186bd19db5fa29f9c03885

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file is heavily obfuscated, as indicated by the ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' and the presence of embedded JavaScript. The embedded JavaScript stream, named 'javascript_obj0037_000.js', is likely responsible for downloading and executing a secondary payload. The obfuscation and the nature of the embedded script suggest a malicious intent to compromise the user's system.

Heuristics 5

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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_obj0037_000.js` `8855df03d0574c929e952181035c18351ce64b7ba36a7a83a732dff51bdb5ae1`	pdf-javascript-stream	PDF /JS object 37 at offset 0xE7	15674 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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