PDF malware analysis — malicious · bcdc49c872cacfb7

MALICIOUS

PDF

6.9 KB

MD5: 0a31c822f9f9121776a714b20256a8ba SHA-1: bdd48d3d57fd2b5cbba7e8c877882b715e6f48d3 SHA-256: bcdc49c872cacfb7a956362d7e6d82284220a883a78c5366b00270f9bbcc14ac

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the unescape() function and a printf() call associated with CVE-2008-2992. This indicates an attempt to exploit a vulnerability in the PDF reader to execute arbitrary code. The presence of obfuscated JavaScript and a ClamAV detection for 'Heuristics.PDF.ObfuscatedNameObject' further supports a malicious intent, likely to download and execute a secondary payload.

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` `7ea48b7b856b38037802ee3509f986d11ef3a6272913d5ca0e7e3137a264aa30`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A5	5743 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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