PDF malware analysis — malicious · 49ea8029879b7b48

MALICIOUS

PDF

46.7 KB

MD5: a8963645a6e9b9ac86b291b2ce9ffc22 SHA-1: 30ae17383397de4efbd287f7e473e272c3e76ccc SHA-256: 49ea8029879b7b48b4629c5a1096ffbf6268f0a1f70647442dce040e1d0b31c9

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 Malicious Link/Object

The PDF file contains obfuscated JavaScript that exploits CVE-2009-0927 in Adobe Reader. The script decodes and executes a second-stage payload, likely for downloading further malicious content. The use of custom Base64 decoding and layered obfuscation is indicative of a downloader or exploit kit stage.

Heuristics 5

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)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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` `fa08c2feb6ab0ec5952b75b686fa3b50bccfe560d53cd21753cd42466708f071`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9411 bytes
`custom_b64_stage_000.js` `9172461fa35d35afbed9b21634139c410227542231e8a9e109e4bd77226af1a1`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1565 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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