PDF malware analysis — malicious · a81045ed6efa95bd

MALICIOUS

PDF

12.1 KB

MD5: 3bccd52620cb77b2f077b0ec1f1f49e2 SHA-1: d3e6dcf2c992ae4d1075b81c90a3c8d21e67383f SHA-256: a81045ed6efa95bd39bd49887d8138fbddc018ee4a8f0fc8592ba6011c02949f

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ClamAV detection 'Pdf.Dropper.Agent-7290616-0' strongly suggests its malicious nature as a dropper. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, which is a common technique for PDF-based malware delivery. The document body was unreadable, but the presence of JavaScript and the dropper signature are sufficient indicators.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7290616-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7290616-0
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `2ecf36c20b6f4ae48c6bb6ba518cbf5559a145445730af484b8a8c4b89ca1eaf`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19E	12823 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 base64-like blob(s).

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