PDF malware analysis — malicious · bd7fce3a164a6ddc

MALICIOUS

PDF

7.2 KB Created: 2009-09-18 19:42:77 Authoring application: Eblasha 3.4.1.2 (via PDF Library 10.6.10.8)

MD5: b8caeddac2c5bc2db931a1d13bb90335 SHA-1: c58e649ffcc2efc149d4317591cef5f2eff27821 SHA-256: bd7fce3a164a6ddcb60bf8f022efeb547c179a43e14a45ff83f355e48577e9d7

164 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

This PDF was flagged by ML classifiers and ClamAV as malicious (Pdf.Dropper.Agent-7217216-0). It contains embedded JavaScript with eval() and String.fromCharCode calls, indicating obfuscated code execution. The primary function of the script appears to be downloading and executing a second-stage payload, as suggested by the 'Suspicious extracted artifact' heuristic. No specific family could be identified.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 7

ClamAV: Pdf.Dropper.Agent-7217216-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7217216-0
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)
ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85

ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
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_000.js` `e1661283c5fbabd22d8ea75e1e09e781860b5a8d7d8ff13add3c5a8f78bba07c`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36B	21483 bytes
`javascript_obj0015_001.js` `7583752bb00e50400afa1935837f5d24fc5a7c8ccd5ca5bb8dd19f8274d151aa`	pdf-javascript-stream	PDF /JS object 15 at offset 0x1885	184 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.