PDF malware analysis — malicious · 8c24fcac69393e29

MALICIOUS

PDF

2.3 KB

MD5: 0d866059ae653a6014555fd83cddc143 SHA-1: e6f195e918aa0b1a59d5f6c8037084eea5cfddc0 SHA-256: 8c24fcac69393e299b48aade9f3e0a716d4599aa05a9aff43388b6e84fa562b8

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File Execution

The PDF file contains embedded JavaScript that leverages the CVE-2008-2992 vulnerability, indicated by the 'util.printf' heuristic. This vulnerability allows for the execution of arbitrary code. The primary intent appears to be exploiting this flaw to run malicious JavaScript, likely to download and execute a further payload.

Heuristics 5

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)
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj263984_000.js` `73ff19102694724608d5028a7651ccfd1610d16bf7ad19a2e6a4380baf398038`	pdf-javascript-stream	PDF /JS object 263984 at offset 0x197	7042 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).
`javascript_obj263985_001.js` `9e985dd61fa123cee021fa914ec085972e7235b9f01aa873aba32431de55fe3d`	pdf-javascript-stream	PDF /JS object 263985 at offset 0x6C9	157 bytes
`javascript_obj263986_002.js` `a22a64eef4305cf385cfea14b164c829e15ac9f90e9f7900b763bee5122de67c`	pdf-javascript-stream	PDF /JS object 263986 at offset 0x79B	512 bytes

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