PDF malware analysis — malicious · e349c7ec6672a136

MALICIOUS

PDF

75.6 KB Created: 2009-11-11 19:43:82 Authoring application: PDF Library 3.10.1 (via PDF Library 3.5.5)

MD5: eced8f42057f2409c1613414d743d4a0 SHA-1: 04ff0d0b01c60848b31d8ecbe41dfc4ee3b2fb8d SHA-256: e349c7ec6672a1363d82e999cdd65b4581cd3ce3d6ded71518b812b1e07e83a4

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

This PDF file contains embedded JavaScript that exploits multiple known Adobe Reader vulnerabilities, specifically CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The JavaScript is obfuscated and uses ASCIIHexDecode filters, indicating an attempt to hide malicious code. The primary function of the script appears to be the execution of a second-stage payload, as suggested by the 'legacy_pdfkit_stage_000.js' artifact. This points to a drive-by download or exploit kit delivery mechanism.

Heuristics 8

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)
ClamAV: Pdf.Exploit.Agent-36110 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36110
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_obj0007_000.js` `9f37d69942ad79cf06f830cf8061f233ec2f80ef5fd9fb2be526b9e5441d1e04`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	38215 bytes
`legacy_pdfkit_stage_000.js` `17818eb8579631e3d20bfb9b1a7616e49cd7f0d1e8f4e07fd912ee6f9d9c37d8`	deobfuscated-js	numeric array subtract-key decoded JavaScript at offset 0x1A5	9880 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 9 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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