PDF malware analysis — malicious · 9f72e46e6efa1a81

MALICIOUS

PDF

205.4 KB

MD5: 50965aef79b597e9696956d25927e708 SHA-1: aa3659a06c9d57255f0818ba082124d34792cc1b SHA-256: 9f72e46e6efa1a812e03b52d578deb65be3de0a721e7edd78c40554161d3e97d

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including 'PDF_JAVASCRIPT' and 'PDF_JS'. The deobfuscated JavaScript, named 'legacy_pdfkit_stage_000.js', appears to be responsible for downloading and executing a second-stage payload. The ClamAV detection 'Pdf.Dropper.Agent-9448684-0' further confirms its malicious nature as a dropper. The obfuscated nature of the script and its role as a dropper suggest a multi-stage attack. The DOC BODY content is heavily obfuscated and does not provide clear user-facing text, but the presence of JavaScript and the ClamAV signature strongly indicate a malicious dropper.

Heuristics 4

ClamAV: Pdf.Dropper.Agent-9448684-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-9448684-0
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.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `543a61276f7959f98c902d56fe58327252393f9e88b1e46f57a20fc9d5201a01`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	2780 bytes
`legacy_pdfkit_stage_000.js` `3021e7920577e291eb61664c62a063a06addd09258f9bcab15cefdfe66fe7941`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xCF7	2552 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.