PDF malware analysis — malicious · 27d8767f61cfa06e

MALICIOUS

PDF

16.4 KB Authoring application: 3.0.4 (5.0.8)

MD5: c57eb3276f51a2c20fa50fbfa9aa8fff SHA-1: 74f3e72e31495493ffabd10a096fafde10b7cac9 SHA-256: 27d8767f61cfa06ec93c0ccbfa333b638f335bbb3c391993c4d065366c124a6f

128 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.7632

Heuristics 6

Embedded script payload in PDF stream high PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain script execution markers such as ActiveXObject/CreateObject, WScript.Shell, PowerShell, or shell-exec primitives. This is stronger than ordinary PDF JavaScript because it indicates a staged external script payload hidden in stream bytes.
Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE

PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 16 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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. (matched inside decoded stream)
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. (matched inside decoded stream)
External URI info PDF_URI

PDF contains an external URL action

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_005_off00003bc2.js` `53956002b167010459a67e9984619b10811020e84212d0e090054b4a84f773f3`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3BC2	2641 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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