PDF malware analysis — malicious · 906de52c8b726121

MALICIOUS

PDF

6.4 KB

MD5: bf175653ea4ae2bd309abded1185c156 SHA-1: e98aab8238b6ac2852e8ecaf62bb8bf4e4a5ea34 SHA-256: 906de52c8b726121d59ca5b7a2a8ff5ff2e6b8bdb82debaf2b82a5a157a2cfd8

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers critical heuristics for CVE-2008-2992 and general PDF obfuscation. The presence of a JavaScript action and an embedded JS stream, combined with the specific CVE-2008-2992 detection, strongly suggests exploitation of this vulnerability. The extracted JavaScript, though not fully detailed here, is likely responsible for downloading and executing a second-stage payload. The ClamAV detection further corroborates 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` `aa877231bb84ade3b38dab0863782ad1b3bc777339ecb00876e777676e246a98`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1AB	5318 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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