PDF malware analysis — malicious · 409b988b4d96035a

MALICIOUS

PDF

20.9 KB

MD5: 6dbb3872a2e64026105fcf85d5eb2702 SHA-1: 1f45d880d9bea13f45c273eff5c6ab58cfa1a8a2 SHA-256: 409b988b4d96035acede2dace0f8d1cea872a002dffa229f6b60d7e98665ed15

216 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2008_2992 firing suggests exploitation of a known PDF vulnerability. The embedded JavaScript, identified as suspicious due to obfuscation and a long encoded blob, likely facilitates the download and execution of a secondary payload. The ClamAV detection further confirms its malicious nature as a dropper.

Heuristics 6

util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure.
ClamAV: Pdf.Dropper.Agent-7253881-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7253881-0
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
Suspicious extracted artifact high 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `ed3a1d4a220d82678577a95a07165416e4d5acf631ec8139ff9ae35b2fef634b`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	1583 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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