PDF malware analysis — malicious · 9dc58a9b6ace274b

MALICIOUS

PDF

70.6 KB

MD5: 95682ce9f28fc4fa2f3e86e35a23f0b4 SHA-1: f30a94dc71183683de4ec14a9596e316d47c0aa5 SHA-256: 9dc58a9b6ace274be1e367bead513d73cf62df6bd278bd4503cf0672346e15f5

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream itself is obfuscated, as suggested by the EXTRACTED_FILE_STATIC_TRIAGE heuristic and the presence of eval() and String.fromCharCode calls. This obfuscation is typical of malware attempting to hide its payload, which is likely a downloader for a second-stage artifact. No specific URLs or hashes were directly extracted from the script content due to its obfuscation, limiting direct IOCs to the embedded script filename.

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.
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.
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_obj0006_000.js` `c143535e795ef020a8ddff80df6b2c5ca6fd83f0975025d8436624e26f26cf50`	pdf-javascript-stream	PDF /JS object 6 at offset 0x12D	71727 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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