PDF malware analysis — malicious · b618b0fc94732c75

MALICIOUS

PDF

52.0 KB Created: 2010-12-07 23:31:08 +02:00 Authoring application: Bad Credit Loan (via mPDF 5.0)

MD5: 9088f2d60ff8174a1979895a5b4afd4d SHA-1: 424feaea3c58fcf1239da7b57f8d11c4aef3d3a8 SHA-256: b618b0fc94732c7555a3c2acaa854bb70a982ed1241b83398a091ec0b011d960

76 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious JavaScript

The sample is a PDF file that contains embedded JavaScript. Heuristics indicate the use of JavaScript actions and unescape() calls, suggesting obfuscated code designed to execute malicious actions. The extracted JavaScript files, javascript_obj0034_000.js and javascript_obj0034_001.js, are likely responsible for downloading and executing a second-stage payload. The document body is heavily obfuscated and unreadable, providing no further context on the lure.

Heuristics 4

unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0034_000.js` `357d06d70777f397a54fd04180a5ee36f36a8ec5c7cbbafdfab41f20901b25ac`	pdf-javascript-stream	PDF /JS object 34 at offset 0xC736	136 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long hex-escaped blob(s).
`javascript_obj0034_001.js` `607a0753f2d28ea7a383d2e729ee9a1eeb69db22eafb74fa3e1d444ae047c123`	pdf-javascript-stream	PDF /JS object 34 at offset 0xC736	134 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long hex-escaped blob(s).

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