PDF malware analysis — malicious · 9f33238dd1527711

MALICIOUS

PDF

5.6 KB Authoring application: Jidagelageno (via 5d085Ylojoppekaxopqi)

MD5: 9ba95cfa76bbe1391fa1c0d2b4d7d07e SHA-1: bb9ae42ca4687257a6f6b771159dbc0d077f17c4 SHA-256: 9f33238dd15277117669f9596e7047b46ff976f30b370324fb44b7d394d87acc

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, flagged by multiple heuristics as a stager for executing code. The ML classifier strongly indicates maliciousness. The JavaScript stream, though truncated, likely serves to download and execute a secondary payload, a common technique for initial access.

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_obj0008_000.js` `c510f8c6a5031d17c6606a6a4e88ede1c3452bf51c2d06efb7ba03d3692fec56`	pdf-javascript-stream	PDF /JS object 8 at offset 0xF52	1346 bytes

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