PDF malware analysis — malicious · 5282dd51542d1014

MALICIOUS

PDF

6.8 KB Created: 2010-09-13 12:13:16 Authoring application: Qggewasdebo (via eeaf8Casiwajiomidox)

MD5: dbd965751a5a767917fd30873ef7a6cf SHA-1: e9dfe27ab4910b50795ea33847c5acd46994126a SHA-256: 5282dd51542d10147bc2777be0b459f08d3f593320b0861574ecb0d0f7ed25af

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript, flagged by multiple heuristics as obfuscated and malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. The JavaScript action and embedded JS stream suggest the document is designed to execute arbitrary code, likely to download and run a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9933

Heuristics 4

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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` `4ed0e25cb988f785847231ed349ce1e5f2b9cb2b6f573c0a3462080817722f94`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1301	1732 bytes

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