PDF malware analysis — malicious · 494f5c968cd910ef

MALICIOUS

PDF

43.0 KB

MD5: 157a2dd98f9a50f5afcf06915369ad66 SHA-1: 65a0826c6280df2877649c0534389d7fd8cdddbd SHA-256: 494f5c968cd910ef453569bf6705668ba2a62ad9f0e557f76fcf16ccbb75ba04

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The deobfuscated JavaScript, legacy_pdfkit_stage_000.js, is likely responsible for downloading and executing a second-stage payload, as indicated by the ClamAV detection of Win.Trojan.Agent-36169 on the PDF and an extracted artifact. The DOC BODY content appears to be obfuscated JavaScript itself, further supporting the malicious nature of the script.

Heuristics 5

ClamAV: Win.Trojan.Agent-36169 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Agent-36169
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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` `165ad035117cb0addeca6a7915c63dfd6d7ca9abe1869fbb216f1cfe3c098356`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	2019 bytes
Detection ClamAV: Win.Trojan.Agent-36169 Obfuscation or payload: unlikely
`legacy_pdfkit_stage_000.js` `81753f58feed98d827d1892e084088c2f1e4042854e1b7dbfcae4acbb858502e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x9FE	2744 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.