PDF malware analysis — malicious · 22a2c77c8b5ce5d6

MALICIOUS

PDF

4.1 KB

MD5: 96658732e7a1e8d7fd16fcb25f6a0122 SHA-1: 0dd8093645e72ec1d20ba0c95c4c430185c43cae SHA-256: 22a2c77c8b5ce5d657ba8cc11d61c7076067b92e9d5c64b2deb50b992db5af3d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF sample was flagged by ML classifiers and ClamAV as malicious (Pdf.Dropper.Agent-5343068-0). It contains embedded JavaScript, including a call to eval() and String.fromCharCode, indicating obfuscation. The JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for PDF-based malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Dropper.Agent-5343068-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-5343068-0
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. (matched inside decoded stream)
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_obj0013_001.js` `8cc6e03059473e514cb30ab2a8b6be73be6e590c76b7d7b1a58aecfb5dd3965c`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6377 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`acroform_b64_00.js` `affea7bafc5683b969acd98669608afb84db88ab411cb6e233f9eaf767bc5323`	deobfuscated-js	PDF AcroForm base64 (decompressed) at offset 0x99D	3629 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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