PDF malware analysis — malicious · 2d93846a6d5ed2cc

MALICIOUS

PDF

6.5 KB

MD5: c6199d4c7f61edb2cbe11c393d45c2bc SHA-1: 42322079046559f23c85ebd8171556be294c4f30 SHA-256: 2d93846a6d5ed2ccf877c3f6b97ae0ca30f9bd6d83bb603b71ca49ffa2fb5c12

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a critical CVE_2008_2992 firing suggests exploitation of a known vulnerability within the PDF reader. The unescape() call and obfuscated nature point towards an attempt to hide malicious code, likely for downloading and executing a second-stage payload. 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: 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` `cd2f324c13eb1e5c992bf18e20d7cee0ef5d6b898f31d5fde2b6143046a44569`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A9	5485 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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