PDF malware analysis — malicious · 5327246c16b658b3

MALICIOUS

PDF

6.6 KB

MD5: 70f84a3d82bee350a5a80c3ff1d43a11 SHA-1: c47e6ebdcb93a8f64866e7496f088ca4e70045e2 SHA-256: 5327246c16b658b3ee0ad87008b40c9c4891c2eda6f33b619ca9d56e6d81aee8

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the unescape() function and a printf() call associated with CVE-2008-2992. This indicates an attempt to exploit a known vulnerability in PDF viewers. The embedded JavaScript stream, identified as javascript_obj0006_000.js, is the primary mechanism for this exploit. The ClamAV detection further confirms its malicious nature.

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-19008 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-19008
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` `f7eb9bf0339f5180e75442356ef3f198ca41adcbcb86691f374c65d25efb2a6e`	pdf-javascript-stream	PDF /JS object 6 at offset 0x193	5568 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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