PDF malware analysis — malicious · 34931cb07998f343

MALICIOUS

PDF

4.9 KB Created: 2010-07-13 10:02:34 Authoring application: Lejwidixomofipo (via ff26fPibifmiz)

MD5: e5e6804f70fdd80a40341a2e16945500 SHA-1: eff966832ed6d521e0fe3e33c71e726835f20664 SHA-256: 34931cb07998f3439a611cc2c373e4db651bc78d300a1cacda3e900fbd33312f

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, flagged by multiple heuristics as a stager. The ML classifier strongly indicates maliciousness. The JavaScript stream, named 'javascript_obj0011_000.js', is likely responsible for downloading and executing a secondary payload, though its exact function is obscured by obfuscation. The document's metadata indicates it was authored by 'Lejwidixomofipo', a known indicator associated with certain malware families.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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_obj0011_000.js` `906fe105a93c063db3c9734ce9d0f2b6604a1ec3141f641b63e5a6e93bede174`	pdf-javascript-stream	PDF /JS object 11 at offset 0xE8F	522 bytes

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