PDF malware analysis — malicious · eef01ace16a10609

MALICIOUS

PDF

4.4 KB Created: 2010-04-23 06:59:32 Authoring application: Dakmiyfomimaba

MD5: 78bd17e13fedae8103d6a9e820280e5b SHA-1: a607ddc1ece03d51364d1aa261890e8ad345d393 SHA-256: eef01ace16a106093a031e70b40b56026fad1393b966e248fb0b5a2659a25055

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The critical ClamAV detection 'Pdf.Dropper.Agent-7321703-0' strongly indicates malicious intent. The PDF contains embedded JavaScript, identified by multiple heuristics, which is likely responsible for executing a stager. This stager's purpose is to download and execute a secondary payload, a common technique for malware delivery. The document body contains obfuscated text and repetitive strings, which are often used to hide malicious content or evade detection.

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7321703-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7321703-0
Page-word XOR JavaScript eval stager high PDF_PAGE_WORD_XOR_EVAL_STAGER

PDF JavaScript enumerates rendered page words with getPageNthWord/getPageNumWords, extracts encoded byte fragments, XOR-decodes the stage with char-code helpers, and evals the result. This is an old exploit-kit staging pattern and is not normal document JavaScript.
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_obj0010_000.js` `77692aa6eee912f470430c71119e8b9c8ba346a577cd63ae147470c7ef4ca3c3`	pdf-javascript-stream	PDF /JS object 10 at offset 0xC9D	896 bytes

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