PDF malware analysis — malicious · d97d08723c49e647

MALICIOUS

PDF

31.2 KB Created: 2009-09-08 23:53:28 Authoring application: vTqoBNAGtpUgMWsuCb (via XEchxXatCUgPKtOk)

MD5: 7f7413bd2a4a0f001efd0305f4f56acf SHA-1: 3184a1a574ff0e03fe7b5ae71ba2de84d6bc4c08 SHA-256: d97d08723c49e64772145c2c8cc2a320f8e94d361cd95834427b30ebe85b5f3f

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The PDF contains embedded JavaScript, including calls to eval() and String.fromCharCode, which are common techniques for obfuscating malicious code. The ClamAV detection 'Pdf.Dropper.Agent-7311151-0' strongly indicates its malicious nature as a dropper. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7311151-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7311151-0
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.
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_obj0019_000.js` `db420dd348d07c8b877172f6edcffdef4611101612c60df6496e88044adb8476`	pdf-javascript-stream	PDF /JS object 19 at offset 0x3870	16478 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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