PDF malware analysis — malicious · ff72b5510d465a59

MALICIOUS

PDF

132.8 KB

MD5: 20d41556afbe1b2b8bf8e901c155a36d SHA-1: 1f8185167dd27b9ddb5860215966874a7c7b7645 SHA-256: ff72b5510d465a595c0e9b1b29005e0ee4370d1af0534fca538e3815eceb2283

200 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF sample contains multiple critical heuristic firings indicating exploitation of CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992 through embedded JavaScript. The JavaScript is obfuscated and likely intended to download and execute a secondary payload. The extracted JavaScript files, particularly 'legacy_pdfkit_stage_000.js', suggest a complex multi-stage attack. The document body contains obfuscated JavaScript code fragments.

Heuristics 6

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
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. (identified after JavaScript deobfuscation)
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `bc7d4e88fb3d29ca9fd3bc075b874319173a2fbb68dc28785831720a51f4865f`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	2095 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `17ead6b96d547749711b64b6186112c350db04cc84cff67fae854dd7fd2e4b09`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xA4A	14781 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 9 eval/decoder/string-building token(s).

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