PDF malware analysis — malicious · 0dabd391649552ff

MALICIOUS

PDF

4.5 KB Created: 2010-04-30 21:33:36

MD5: 41425ba13e45ca582ad019ebe03e796c SHA-1: 062552b75daba679191a475c90040637de14ea13 SHA-256: 0dabd391649552ff7856bfe3bc507623250fe212878ffa92b6a53329ef8a7d84

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, identified by multiple heuristics as a stager. The script reconstructs strings to form function names and constants, ultimately appearing to download and execute a second-stage payload. The reconstructed URL "getPhtAageNnumWoBXCrdsBCX" and other constants like "PyJunescapeWFK1" are suspicious and likely part of the payload delivery mechanism.

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` `f9574e2977d52e68f5e3b86aa1cb694f7959d8b2dbee9502243c7952060c4a3b`	pdf-javascript-stream	PDF /JS object 11 at offset 0xCEB	838 bytes

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