PDF malware analysis — malicious · 790af7e7c72de968

MALICIOUS

PDF

45.4 KB

MD5: e7ef8d53934cb380aae7a8e005326185 SHA-1: c828819e6d6982b2372065f026dc157f98bedfdb SHA-256: 790af7e7c72de96849918b3df7eb8897006779944ce5e5a3003d93f4589f7dba

100 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File Execution

The PDF file contains embedded JavaScript that leverages the Collab.getIcon method to trigger the CVE-2009-0927 vulnerability in Adobe Reader. This vulnerability allows for arbitrary code execution, likely to download and run a second-stage payload. The JavaScript is obfuscated and requires custom decoding, indicating a deliberate attempt to conceal its malicious nature.

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` `b6ffd5525d4013932c64446613cc71940407093052bb7e35d22d06b72535d78c`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9143 bytes
`custom_b64_stage_000.js` `19437f981006696c204599df51bd4d97c9f158c85de0bf4c43d87a39095657b7`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1499 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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