PDF malware analysis — malicious · a0bbd80fb5249984

MALICIOUS

PDF

76.2 KB Created: 2010-03-16 22:18:29 Authoring application: H2bWP (via wJ5snXS)

MD5: c90a5f973d963ee80adf1ce230e85e52 SHA-1: 7c20f614a7282cbf4029e0975c4295e4fa55de1f SHA-256: a0bbd80fb524998463f96ddb2afc16a402c40f8148ac41cd032eb1c545048569

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream is heavily obfuscated, utilizing `eval()` and `String.fromCharCode` as evidenced by PDF_EVAL and PDF_FROMCHARCODE. The primary intent appears to be the execution of this obfuscated script, likely to download and execute a second-stage payload. The file is flagged as malicious with a high risk score.

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` `a897868c8c6b8a304ad7a9523bad281d21decfbd06c2f4dbc6a29f8021f6dbd5`	pdf-javascript-stream	PDF /JS object 7 at offset 0x247	76864 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.