PDF malware analysis — malicious · 8ac3dcee7b0e3004

MALICIOUS

PDF

8.1 KB Created: 2010-06-17 13:33:03 Authoring application: Faseuivivoqelt (via 1e042Nezebcozavejwe)

MD5: 6c8dfabea439d7d5b26fa223e36b40f1 SHA-1: b1e9b60f18c5c4da98f3c20d374fe190a930e74e SHA-256: 8ac3dcee7b0e3004471b9be25c1802cac4e069bdaef2c7f6d1536310b5878a9c

298 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF document is malicious, leveraging multiple known vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) to execute obfuscated JavaScript. The script is XOR-decoded and likely serves as a downloader or initial execution stage for further malicious activity. The specific intent of the script is not fully discernible due to obfuscation, but its presence and the exploitation of known PDF vulnerabilities indicate a high likelihood of payload delivery.

Heuristics 8

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
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)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
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_obj0013_000.js` `dd11777c2a94dfe17a253240f43a3e56155a82ef18ea46501cef3c61d3c7cac6`	pdf-javascript-stream	PDF /JS object 13 at offset 0x137B	3725 bytes
`page_word_xor_stage_000.js` `20b5c4e2565918f677749f97bcc6919f0c73c85a3ac807a9477d2b64f979e7c6`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0x19) at offset 0x41D	3315 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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