PDF malware analysis — malicious · 3fe4400ddcf6bea0

MALICIOUS

PDF

5.8 KB

MD5: dbeaa282b730e9027ea71b322ce957d5 SHA-1: cb9b844e704044346d4a4959e62574bcacf68b29 SHA-256: 3fe4400ddcf6bea0e222566cf31e675ca513004efd6e85a8d9038bc1020ca265

178 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 the CVE-2008-2992 technique firing suggests the exploitation of a known PDF vulnerability. The unescape() call and the extracted javascript_obj0006_000.js artifact further confirm the use of obfuscated JavaScript. This script is likely designed to download and execute a second-stage payload, a common technique for initial access.

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. (matched in decompressed stream)
ClamAV: Pdf.Exploit.Agent-23070 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-23070
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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.
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_obj0006_000.js` `5e90bbe2257279e5a4c6dd2167bbfe54b62a305fe6bf67e9dbe008b49761dcfe`	pdf-javascript-stream	PDF /JS object 6 at offset 0x193	4728 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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