PDF malware analysis — malicious · 8e0a1c948246792c

MALICIOUS

PDF

3.1 KB Created: 2009-05-31 15:33:12 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 8d742f918ff15fd41b5285887a880627 SHA-1: 3a83c85e7895c94aaf448561eb7ff479141834bd SHA-256: 8e0a1c948246792cceaf24b6c68fd5570f885151a7de90b1260d93b798fd33e7

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, including calls to eval() and String.fromCharCode, indicating obfuscated code execution. ClamAV identified this as Pdf.Dropper.Agent-7281561-0. The embedded JavaScript likely downloads and executes a second-stage payload, though the exact mechanism is obscured.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7281561-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7281561-0
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `d2e236562505d5a2dc61e3a5713f661af4a3b1f2cee0c0af66c418bb21b6e4dd`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3CE	4839 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`deobfuscated.js` `8bb38e2ab37c59455724a8161613da5522fd4f8336f39371c9f26ad6fb4707ff`	deobfuscated-js	PDF JavaScript deobfuscation pass	9958 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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