PDF malware analysis — malicious · 94ce1774c9d01839

MALICIOUS

PDF

27.4 KB Created: 2010-03-14 05:18:37 Authoring application: ddMav0R (via tQdFQ8qFPZpPa)

MD5: a46e6c37266edd83552b61dc9f8d67fc SHA-1: aa5cc97cde8bbb9e2017b35947f47d1a91285812 SHA-256: 94ce1774c9d01839ef68ce18cb43a89313abc7abd3650c716a861292ebcec7af

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and a critical PDF_EVAL call. The embedded JavaScript is obfuscated and uses String.fromCharCode, suggesting an attempt to hide malicious code. The ClamAV detection of 'Pdf.Exploit.Agent-15583' strongly suggests this is a known PDF exploit. The primary function of the JavaScript appears to be downloading and executing a second-stage payload, as is common with PDF-based malware delivery.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-15583 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-15583
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` `1c2b802e6027b528dbccd2ae31a065c40bf3c0f4214d993d72073f115096e435`	pdf-javascript-stream	PDF /JS object 7 at offset 0x23D	26800 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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