PDF malware analysis — malicious · f5089f4fd7eba0fd

MALICIOUS

PDF

74.5 KB Created: 2009-12-28 19:45:35 Authoring application: PDF Library 5.10.8 (via PDF Library 8.2.9)

MD5: e4f38bf7b2ebe726cc643e754bee0f3d SHA-1: 1bfad74df73ef312ffc87c4c029b59bbc6f7f8d0 SHA-256: f5089f4fd7eba0fd19ca6760232343b7f5d6074c94b1a7dba9b47baba6610862

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 User Execution: Malicious Link T1204.002 User Execution: Malicious File

This PDF file contains embedded JavaScript that exploits multiple Adobe Reader vulnerabilities, specifically CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The exploit leverages these flaws to execute arbitrary code, likely to download and run a second-stage payload. The presence of multiple critical exploit firings and the ClamAV detection strongly indicate malicious intent.

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` `a438151f674dc5882c118a5e4d31092e8969a32bb803b0baa50f9a1432b923a7`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	37640 bytes
`legacy_pdfkit_stage_000.js` `a349275fac007747a54f72bbe3c166de0a7ac425a015e40c63936a84f4bcce4a`	deobfuscated-js	numeric array subtract-key decoded JavaScript at offset 0x1A5	9964 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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