PDF malware analysis — malicious · 909b56476994a3e4

MALICIOUS

PDF

3.0 KB

MD5: 7cb13dbe9b807ea1985c0b5a49e0aaa9 SHA-1: 3f41d4c209212ecc89529d2d319489ef6573a985 SHA-256: 909b56476994a3e483f64ea0da071a08289823f94508bdc10bda829097ee529c

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection of 'Pdf.Dropper.Agent-1828837' strongly suggests its malicious nature. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for dropper malware. Due to the obfuscated nature of the JavaScript and the lack of specific IOCs beyond the ClamAV signature, the family remains unknown.

Heuristics 5

ClamAV: Pdf.Dropper.Agent-1828837 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1828837
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_obj0009_000.js` `9d98e8374481a16d1acd0d2cc2f3e4c47c3ad0940f3dbb7cba08c1be60f74fb5`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	20833 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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