PDF malware analysis — malicious · ed33934debe50d75

MALICIOUS

PDF

17.3 KB Created: 2010-03-06 09:38:47 Authoring application: n5Ao2S (via Gg55qJSY6PFye)

MD5: 2b605389dfa4505d8fad045d1e2f3bb6 SHA-1: 55e18c47471905077b52f631a8260cc3b3dbbc60 SHA-256: ed33934debe50d758b7f69df680636449368316d570b71f394eab5c6ac00f291

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 presence of a PDF_EVAL call and String.fromCharCode suggests obfuscation and dynamic code execution. The extracted artifact 'javascript_obj0007_000.js' is suspicious. The overall behavior points to a malicious PDF designed to exploit vulnerabilities and execute arbitrary code, likely for downloading further malware.

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` `c176def50109b897d1e19f505fceb105250f0d58fc8f32c58b846293d7292e9e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x247	16451 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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