PDF malware analysis — malicious · 0e7ec56802783c42

MALICIOUS

PDF

31.1 KB

MD5: d33f3d5847f6590ac6e54389b2b88f87 SHA-1: 32a5db3b075664ccd009dc22142627e888fb4b35 SHA-256: 0e7ec56802783c42d83071f20f2638998dcce38a35f61e34d5da1e4b42cd1462

196 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF file contains embedded JavaScript and a Flash object (SWF), both of which are commonly used to deliver exploits. The JavaScript, particularly the eval() calls and the deobfuscated code, indicates an attempt to execute malicious code. The presence of these elements, along with the ML classifier flagging it as malicious, strongly suggests it's designed to exploit vulnerabilities and download further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 7

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.
RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`TyPWoIJRMY.swf` `767382813fc770c9716554c3266b22eee1636037ca964af05acf6ff66db4a27d`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x117A	26993 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.98, consistent with packed or encrypted content.
`javascript_obj0006_000.js` `a094742ebbf0fecfc8419c6dc87ab6c2e2a25fe3640402baffd2a68116adad94`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF9	3377 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `383b1cfa25d2fab77e8a565970e1fbace4518dc36c26a7654c8983eeb5f1e50f`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xDAD	2047 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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