PDF malware analysis — malicious · d56c0e166fd8d087

MALICIOUS

PDF

14.7 KB

MD5: 5626db30ce884fce656f11aa83912101 SHA-1: 8d444ad54566dd667b3f3be91f5e1dcff56b5881 SHA-256: d56c0e166fd8d087ee7c967037753c5c9b93cc458bfc0575652d1b19840d8c51

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file was detected as malicious by ClamAV with the signature Pdf.Exploit.Dropped-94. Static analysis revealed embedded JavaScript with obfuscated code, including the use of eval() and String.fromCharCode(), indicating an attempt to hide malicious actions. The primary function of the embedded JavaScript appears to be downloading and executing a second-stage payload. The document body is minimal and does not provide further context on the lure.

Heuristics 6

ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
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.
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_obj0076_000.js` `c28effae366bd4b2a63fe29aea090a07947ae4e73aa9efc1cf87e16e006e7288`	pdf-javascript-stream	PDF /JS object 76 at offset 0x3947	144 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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