PDF malware analysis — malicious · bf16e16baef1545c

MALICIOUS

PDF

6.6 KB

MD5: cea866792db54723a9990e7c909ca7da SHA-1: 7ae8f6621aa6679563c9f07396860557591c2d51 SHA-256: bf16e16baef1545c33e9afc45c3d532294633ddc90a9755601f550516148db96

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1566.002 Phishing: Spearphishing Attachment

The PDF contains embedded JavaScript, flagged by multiple heuristics, which is designed to obfuscate and download a payload. The ML classifier strongly indicates maliciousness. The embedded URL is the primary indicator for the second-stage download, suggesting a downloader or droppper functionality.

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.strongprholder.biz.tm/?j7tnvke3t=jprh0rPQ3Zia6N3WrKaXpqeO4%2BDQoqubmKmlqtCaZ63Xmubiq5ijpZ2mnJqdp6Fd4OGznJVjq5nV1NHgpMSztb%2BS1M7Wp2qa4Zo%3D

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `f0f39c17eb8d347496b8fbf50c52ce37b9a255fd61d4b88b71f95ac90e13deb3`	pdf-javascript-stream	PDF /JS object 5 at offset 0x1B5	6029 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` `98778f86d6085476415456b41779ce9a1dc81448de965fbedc31a03e8d203f86`	pdf-javascript-stream	PDF /JS object 5 at offset 0x1D8	6312 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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