PDF malware analysis — malicious · 9ed1e32e5eab6911

MALICIOUS

PDF

5.2 KB Created: 2008-12-03 13:57:41 UTC

MD5: 424c27bb8c1b4f15830292c0b92d2e5d SHA-1: cac936c52f5445354c9f1b41fde3741cd44ad061 SHA-256: 9ed1e32e5eab69114724dc84403264122763a33e68499f284377c22ce822e6e7

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF 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() and String.fromCharCode() to construct and execute malicious code. ClamAV detection as Pdf.Dropper.Agent-6308612-0 further confirms its malicious nature. The primary function appears to be downloading and executing a second-stage payload.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-6308612-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-6308612-0
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_obj0006_000.js` `ee6a21db81fe0bd65e69ced30695e01ddc2af36a92842df490ce67417653768a`	pdf-javascript-stream	PDF /JS object 6 at offset 0xC5	8607 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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