PDF malware analysis — malicious · 49abd0c004efc080

MALICIOUS

PDF

5.1 KB

MD5: ca1fe0c6ec29c9fbede5b0bcfbe58e48 SHA-1: 56d536a8d14b652caefcdeff48a2c0ef17e38c94 SHA-256: 49abd0c004efc0805fffeed655c8fc7cc64c631f59e3c5c060bc60f273191950

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EVAL and PDF_FROMCHARCODE firings suggest that the JavaScript is obfuscated and uses eval() and String.fromCharCode() for execution. The extracted artifact 'javascript_obj1782_000.js' likely contains the malicious script. The obfuscation and use of eval() strongly suggest the script's purpose is to download and execute a secondary payload, a common technique for malware delivery.

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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj1782_000.js` `770b22681f5a11b750d67dd90866d240fdc879e2af9ee7c391158d57bcb2c9fa`	pdf-javascript-stream	PDF /JS object 1782 at offset 0x132	8358 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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