PDF malware analysis — malicious · a02d678df9ef4a23

MALICIOUS

PDF

4.7 KB Authoring application: Fesafahahuekemoj (via 866b3G meweqihyl)

MD5: 719156965ad05417aa1a9abb87b76b0c SHA-1: e6854316a0b5a6d0477fbfbcff5ef67840ab21e7 SHA-256: a02d678df9ef4a23fa760a304b9fd9c765f87898156fb0427dfc54c1d043b80d

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, PDF_EVAL, and PDF_PAGE_WORD_XOR_EVAL_STAGER. The embedded JavaScript stream, named 'javascript_obj0010_000.js', is likely responsible for downloading and executing a second-stage payload. The obfuscation and stager pattern suggest a malicious intent to compromise the user's system.

Heuristics 5

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` `ee917d6393e01e6ad2c20686aa47d42b3a5a63c09aaed05bf36b1fc92d87b5df`	pdf-javascript-stream	PDF /JS object 10 at offset 0xE15	489 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.