PDF malware analysis — malicious · 457ea8d0fa124c0c

MALICIOUS

PDF

6.9 KB

MD5: 745518baad3ee38f8cc018c2f7903328 SHA-1: f3d5a8843fb6482464a49c5ffaf8416f7678da90 SHA-256: 457ea8d0fa124c0c8a8d30a2d90523a050be02ef3c84ffe20852f3396218df5d

216 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2008_2992 heuristic firing suggests exploitation of a known PDF vulnerability. The embedded JavaScript stream, named javascript_obj0006_000.js, is likely responsible for executing malicious code, potentially downloading further stages. The unescape() call and obfuscation indicators further support this. The document body content is unreadable, providing no further context.

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)
Suspicious extracted artifact high 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `f8a3fd1831130bc9bc11d6d68b26635b25ad4535a14fb7d71fc8933218c67f75`	pdf-javascript-stream	PDF /JS object 6 at offset 0x199	5696 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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