PDF malware analysis — malicious · 9acf026682d50bfc

MALICIOUS

PDF

16.2 KB Created: 2010-03-12 22:18:31 Authoring application: T0xiuH4 (via PP5xqx)

MD5: 27d3711d2f6e1a867d3505ca617ffa6d SHA-1: 003ca7a8817bb7ded75b503b57c459380ffd92b8 SHA-256: 9acf026682d50bfc0b903e68c6780d1a945114235856badd488f3d629771a70c

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a PDF_EVAL call and String.fromCharCode usage suggests obfuscation and dynamic code execution. The extracted artifact 'javascript_obj0007_000.js' is suspicious and likely contains code to download and execute a secondary payload, which is a common technique for initial access.

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.
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_obj0007_000.js` `0fc1f5c8c3ab76079c7e2efc74270f135fa16d9d6c42276f65e9261c3bff8ce8`	pdf-javascript-stream	PDF /JS object 7 at offset 0x244	15366 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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