PDF malware analysis — malicious · 563d02ee2a1a071c

MALICIOUS

PDF

17.8 KB Created: 2010-03-16 17:18:32 Authoring application: U7HpmGfaie98wr (via asdoUUFEcj)

MD5: 5fc6e2a7c328ac8f95338cd38175db3c SHA-1: 17c2da54d5449ca823398f68d33dc7a2117e3f1b SHA-256: 563d02ee2a1a071cdc5a0ffaca4957f3c356f9669f0bd6e0aa9ac6f4fa1d1109

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and a high-confidence PDF_EVAL call. The embedded JavaScript stream, named javascript_obj0007_000.js, is suspicious due to obfuscation indicators. This script is likely designed to download and execute a second-stage payload, a common technique for initial access.

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` `70a436b902274d7f5a0a7d7f6508ba8a6e57d222856dab3e1af41385da223406`	pdf-javascript-stream	PDF /JS object 7 at offset 0x233	16975 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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