Pdf.Dropper.Agent-7217769-0 PDF malware analysis — malicious · c32ee906ac440767

MALICIOUS

PDF

4.0 KB

MD5: 7dd4a452ebfbe640fd24536c9f5f2a4a SHA-1: 4434fd1c9e0ccb10121532c424a973190bfbaf7a SHA-256: c32ee906ac44076734dbf13fe6dca2bb4f081b5fdf9b41ef57f0e6d192c38a37

126 Risk Score

Malware Insights

Pdf.Dropper.Agent-7217769-0 · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream utilizes `eval()` and `String.fromCharCode()`, suggesting obfuscation and dynamic code execution. The ClamAV detection `Pdf.Dropper.Agent-7217769-0` strongly suggests this is a dropper. The extracted JavaScript files, particularly `acroform_b64_00.js`, likely contain the logic for downloading and executing a secondary payload, which is a common dropper behavior.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7217769-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7217769-0
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` `41b4d3e069f9fb5c9eaf4087036a9940d38c7c3418a7a6434bad60eb45aa3cf2`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6373 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` `8ebd1c4dfcbde13f5ec4551144e988548fc591d974681858c99eab2699b4caeb`	deobfuscated-js	PDF AcroForm base64 (decompressed) at offset 0x99D	3627 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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