PDF malware analysis — malicious · 7a476e8cf11b54df

MALICIOUS

PDF

6.7 KB

MD5: 976a383f5d9b4306ab5125a9f3fb9ad7 SHA-1: f28f457cf724c7cae438f532979993ccff61ff5d SHA-256: 7a476e8cf11b54df4df447557a6ea073912f823edb78e9578acafa247421a5e9

68 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript streams that are heavily obfuscated. Analysis of the script reveals a URL that is likely used to download and execute a second-stage payload. The ML classifier strongly indicates maliciousness, and the presence of JavaScript actions and embedded JS streams further supports this. The URL http://www1.stronglfoantivir.uni.me/ is the primary indicator of compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

Suspicious extracted artifact medium 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.
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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://www1.stronglfoantivir.uni.me/?t7vnlh=mJrj0qnN69mY5NfLqZummKOa3erVr6lo2KOgm6mtpaWljeDZrJKhp5mom6usaKaU2NuwpaKfpo3NyNHTq8a9wY%2Fi3ZuzoZLblw%3D%3D

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `fedaa16b3660fb8d3a1008521c565a8df14c094ec2ae4ca12b88de9affe121a3`	pdf-javascript-stream	PDF /JS object 5 at offset 0x1D4	6081 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s). Carved artifact contains 1 long hex-escaped blob(s).
`javascript_obj0005_001.js` `b8bf9031dd5f1fe04473745a5b58caed75bd428fd7ce3385617926770291e45f`	pdf-javascript-stream	PDF /JS object 5 at offset 0x1F7	6364 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s). Carved artifact contains 1 long hex-escaped blob(s).

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