PDF malware analysis — malicious · 17f303f2afc22174

MALICIOUS

PDF

4.7 KB Authoring application: Fogohadodavejiqa (via dd063Jigisewoue)

MD5: 533c98e242a60d3b0d1353eb1dc28a9c SHA-1: f6dea9b55200988e5cbe696c15aa39588892a511 SHA-256: 17f303f2afc2217498693557cbeb86784e4adf91a962354cedb70e644be0b779

188 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains obfuscated JavaScript that utilizes eval() to execute a payload. The script appears to be designed to decode and run further malicious code, likely a downloader or exploit. The ML classifier and specific PDF heuristics strongly indicate malicious intent, pointing towards a common pattern of PDF-based exploitation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0010_000.js` `f927d745a5f88bd25577c1ca5989364febb11ae7e2090c66669d4b594919741c`	pdf-javascript-stream	PDF /JS object 10 at offset 0xDE7	496 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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