PDF malware analysis — malicious · 49bf1145d397137c

MALICIOUS

PDF

45.8 KB

MD5: 9d6ec080695afde8053bca7b7c4fc8a3 SHA-1: 2c6aa1a71efbd35fb540f6a9d6907b648995f8af SHA-256: 49bf1145d397137c1a1960ef0854d33f64890a4b0e9529b4f5929ee47409dedc

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that utilizes the Collab.getIcon method, a known indicator for the CVE-2009-0927 exploit. The JavaScript is obfuscated and decodes further layers, ultimately aiming to execute a malicious payload. This indicates a downloader or exploit delivery mechanism.

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` `c1e86b501f5c97ce9cc0dcadaaea5bae169a2a6d561e28a4efeadd3386394dbb`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `82df66b53e916c3cbdaeafd8f255f6139409cb0a3c17cf6ff7990e7ebee332b3`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1517 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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