PDF malware analysis — malicious · f98e1b796c607b45

MALICIOUS

PDF

16.1 KB Created: 2008-04-28 12:17:40 +03:00

MD5: 34f4779c632058301cc514f785dd31d8 SHA-1: dd36aeb18de872a8a1a687811aecc73c5c722270 SHA-256: f98e1b796c607b450c3990525e8fe517e27f2112f745cc149f0c50db40f06b67

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript file, 'javascript_obj0007_000.js', is likely responsible for executing a secondary payload, a common technique for PDF-based malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9920

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7326407-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7326407-0
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` `b72961ae5bb5740f3e84007017cb9e270cca68c43d7f3d66c73cd4899e64ab3d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1F6	17091 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).

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