PDF malware analysis — malicious · db02af96c4b6ac90

MALICIOUS

PDF

7.5 KB

MD5: 9644e8aa738c9d6a4e8e4e37d4b2a6c5 SHA-1: fa2591292ba4fa6b6f9cd10dda9c874ae205ba48 SHA-256: db02af96c4b6ac9003ba77f894c41a87fd3deca95f754170744b1423299e63d4

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The JavaScript stream is obfuscated and utilizes eval() and String.fromCharCode(), suggesting it is intended to download and execute a second-stage payload. The lack of readable document body text prevents a more specific determination of the lure, but the technical indicators point to a malicious script execution.

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_obj0004_000.js` `0644e2f9745eb2f45d33e4d12258cbcbabe8006b4c217c7a960cda237aa2dabc`	pdf-javascript-stream	PDF /JS object 4 at offset 0xE1	297 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`stream_002_off00001bd6.js` `de5dc9f5ca1b5040c78264707356693b74693daa23e232c0a25894362ee3d372`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1BD6	309 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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