PDF malware analysis — malicious · 332b06e6cad764dd

MALICIOUS

PDF

6.5 KB

MD5: f54b88c7943faee7c8fbf75110dcf3c1 SHA-1: e202c9ff35e6700305af2199a856767349eee611 SHA-256: 332b06e6cad764dde05b24bca38bf66485e12ffe3fe592a511b43742c0d8260a

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, which is a common delivery mechanism for exploits. The critical heuristic firing for CVE-2008-2992 indicates the exploitation of a specific PDF vulnerability. The presence of unescape() and obfuscated JavaScript further suggests malicious intent, likely to download and execute a second-stage payload. The ClamAV detection reinforces the malicious nature of the file.

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` `185bfd2e9485afe40bbd4134e1cc36d9781c3a31f3f05dda79c13cb7beac8e7d`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A9	5455 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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