PDF malware analysis — malicious · 7bcc1e55a65d5014

MALICIOUS

PDF

40.2 KB

MD5: 200403de22c823a3100585a3e142ceb7 SHA-1: a8da4ca56854ec2f8bf182cc00c12acd36d56362 SHA-256: 7bcc1e55a65d5014ba5c82e7687bfe4ff24c1e984082aaac4b6b8957e4e65d89

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

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

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` `6833783f5d4d580e0899b085f1cd7887522496df4865e1fea83b4d5b5760d5e4`	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` `65189d71b9386ccf6a6abb5e8560313d0367ecd7f84d88a718a054d2e8d4bacc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x9FE	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.