PDF malware analysis — malicious · 3e69efdc5775f4fb

MALICIOUS

PDF

52.5 KB Authoring application: PyPDF2

MD5: 8b073f3585a1a5b6f51a322aef0e46f3 SHA-1: d6e41f2640b6d28ad7511475160ac0efb7742900 SHA-256: 3e69efdc5775f4fb8d1fe7ebc94c5e13343a029b139f11de500dedde7cb1ebaf

60 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1105 Ingress Tool Transfer

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EVAL heuristic firing suggests that the JavaScript is obfuscated and uses eval() to execute code. The extracted JavaScript streams, particularly 'javascript_obj0004_000.js', are likely responsible for downloading and executing a second-stage payload. The document body itself is heavily obfuscated and appears to be a lure, as indicated by the PDF_IMAGE_ONLY_LURE heuristic, suggesting it's designed to trick the user into interacting with the malicious JavaScript.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE

PDF has 1 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0004_000.js` `9fe702d19daf16a63154f07738a069340cecf4a2340152930e9615bb31ec914f`	pdf-javascript-stream	PDF /JS object 4 at offset 0x134	7632 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0004_001.js` `5c1fad34ce8e19acae0cfd3279269582b0bb43d3d394fb11a216a9c4830e72da`	pdf-javascript-stream	PDF /JS object 4 at offset 0x134	151 bytes

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