PDF malware analysis — malicious · ca7cf0c591075b66

MALICIOUS

PDF

6.0 KB

MD5: d4eb5b35176cdc5456480e4b8f28e4a2 SHA-1: eecff00648250888da2d459ff1e66fec49fdbde8 SHA-256: ca7cf0c591075b66d0a7022388816cae3b704412fab9b3065563f6d757c857de

178 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 and PDF_JS. A critical CVE_2008_2992 alert suggests exploitation of a vulnerability related to util.printf. The ClamAV detection further confirms its malicious nature. The embedded JavaScript, although not fully detailed here, is the primary mechanism for exploitation, likely leading to further malicious activity.

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: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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` `da00acc6427818e0b3ff7b4bd0a66f8918503301a850041c393996e92e9c9df7`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A5	5197 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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