PDF malware analysis — malicious · 6844a870873fc248

MALICIOUS

PDF

25.8 KB Created: 2006-02-01 14:14:12 Authoring application: Wegoptyr (via HghTc6Fs)

MD5: 64070f23d374d5614e65ebd2284aca83 SHA-1: 1dfc0ce43005717744b557eff9ba6bcbc3245a0c SHA-256: 6844a870873fc2487f25cb058530517f26708fae5a6721108cb03a0076851909

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains embedded JavaScript streams that utilize `eval()` for obfuscated code execution. This pattern is indicative of a dropper mechanism designed to download and execute further malicious content. The ClamAV detection name 'Pdf.Dropper.Agent-7268720-0' further supports this assessment.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Dropper.Agent-7268720-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7268720-0
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
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_obj0007_000.js` `a5638a8d18ab4024fd7958ef52423d39a96514b96c0089d67c1b623c1913beaf`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1EE	25333 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `7ac944583c43f81639ef19b5e34414d004edfd5f72c9b30ebaef92ddb26ca777`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1EE	25058 bytes

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