PDF malware analysis — malicious · 2726fc674901856b

MALICIOUS

PDF

28.1 KB Created: 2010-03-13 03:18:51 Authoring application: BhDHm (via hx7hw95lm)

MD5: 60f61ec5d2a614abc1901b519dfc46ae SHA-1: 60382a055aaa34e3e19f23d388345baacec9bd79 SHA-256: 2726fc674901856b9720e15a69a338fc2a845f97bea03375e569103540a565be

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 presence of PDF_EVAL and String.fromCharCode suggests obfuscation and dynamic code execution. The extracted artifact 'javascript_obj0007_000.js' is likely responsible for the malicious behavior. While the exact script functionality is not fully detailed, the combination of these indicators points to a common pattern of PDFs used to download and execute further malicious content.

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` `18a3ab561dcb507ad6354a891208dba1774a3b06171ad8ab231f15a4ea6e5a52`	pdf-javascript-stream	PDF /JS object 7 at offset 0x23E	27517 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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