PDF malware analysis — malicious · 90ed521f750f2437

MALICIOUS

PDF

7.3 KB Authoring application: Bofatezozinefaxfa (via 8ccf1Vogewojixariuawi)

MD5: 53a41009f7569167d099d76888a4d57a SHA-1: 0e1608ec056533466c59fa316643bf0be6340db2 SHA-256: 90ed521f750f2437f3eca52801bc0a330031f30e9cf3783184693f79feafca9d

76 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment

The file is a PDF document that contains obfuscated JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection further confirms its malicious nature. The JavaScript is likely designed to download and execute a second-stage payload, although its exact function is obscured. The presence of JavaScript within a PDF commonly indicates a phishing or exploit delivery attempt.

Heuristics 3

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0011_000.js` `ca838ab153ea9de4fff1e74bdd0848fd720f71bc6fbee4425be234136cd19b41`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1349	2325 bytes

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