PDF malware analysis — malicious · 54eec1cda7187d8e

MALICIOUS

PDF

3.9 KB

MD5: 30af3460fbe2936f13eae4ee7982db49 SHA-1: 1151ab82f8dbefa38c9ef102fa566ccf55553944 SHA-256: 54eec1cda7187d8e5a4a0092f4736b8abc0da1c627ccc9037eb1e92c98e92d71

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

This PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The JavaScript stream, specifically the deobfuscated version 'acroform_b64_00.js', utilizes eval() and String.fromCharCode, suggesting it's designed to execute arbitrary code. The primary intent appears to be downloading and executing a second-stage payload, though the exact URL or execution method is obfuscated within the script. The presence of these obfuscated scripts and the high-confidence eval() firing strongly suggest malicious intent.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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_obj0013_001.js` `c7a423364ce4f00d9b0432abc3cb4548e4e30c7b61f8ac9af86d3ed58e9129ea`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6117 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`acroform_b64_00.js` `4ceada3a1c39d79958af49b5f21d51797c4fc22487e7afe91c80b19695e55f87`	deobfuscated-js	PDF AcroForm base64 (decompressed) at offset 0x99D	3435 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 7 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.