PDF malware analysis — malicious · a2ab8893bb502bd1

MALICIOUS

PDF

4.3 KB Created: 2008-12-17 23:30:58 UTC

MD5: 512ec739ac03d50e0afa5087fb16f491 SHA-1: b95c751163ab290418f453469a1e9012e38eb2e5 SHA-256: a2ab8893bb502bd1ec03ed500bcf4de4878e3f89b3a53985e7d0100b6870abc2

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream includes an eval() call and uses String.fromCharCode, suggesting obfuscation. This script is likely designed to download and execute a second-stage payload. The extracted artifact 'javascript_obj0006_000.js' is also flagged as suspicious due to its size and obfuscation.

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. (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` `6f7c7f36079aba12a3352326c7c1d8cc7eb8ccb7702362946d7664ca11866ea0`	pdf-javascript-stream	PDF /JS object 6 at offset 0xB5	30696 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).

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