PDF malware analysis — malicious · 7ef9bc0c51abc9a3

MALICIOUS

PDF

64.2 KB Authoring application: 3.0.2 (5.0.5)

MD5: 437894cd1b4c256e666411400db15a8c SHA-1: dc1da101e7814e74935f9c217d3bc1decf5a7da7 SHA-256: 7ef9bc0c51abc9a3b82f1a89c2bc5d1f6ba5bba63a7251fff041852019c3a2d9

128 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1566.002 Spearphishing Attachment

The PDF file contains a JavaScript action that triggers a redirect to the URL https://booking-com-details.blogspot.com/. This is further supported by heuristics indicating an embedded script payload and an external URI. The document's structure and small size suggest it is designed as a lure, likely for phishing or a scam, to trick the user into visiting the malicious site. The ML classifier also flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.6531

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 64 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_010_off0000fa7f.js` `d7771c783d814c612df7654698d932a296585e6502b9cfd8388b826199e6cade`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xFA7F	2932 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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