PDF malware analysis — malicious · a1db402fb4c4071d

MALICIOUS

PDF

17.8 KB Created: 2010-03-12 16:19:05 Authoring application: zCopoy702 (via bqMiv0H)

MD5: 53e4a0e0c409d65a56c2a122576a8cba SHA-1: e956e78c7925a60066d69cac7817885d666034a0 SHA-256: a1db402fb4c4071d27a5da431584f868f32c337d15d020080898cdecbf1ca581

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EVAL firing suggests the script is obfuscated and uses eval() to execute its content. The extracted artifact javascript_obj0007_000.js is also flagged for script obfuscation. The likely intent is to download and execute a second-stage payload. Due to the obfuscation, the exact payload and delivery mechanism cannot be determined with high confidence.

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` `1218b271e1d811b9ad4a3503c66128b14a8d509cd714099d1a5c36108898a088`	pdf-javascript-stream	PDF /JS object 7 at offset 0x245	16974 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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