PDF malware analysis — malicious · 8b5f411d6f4e2f6b

MALICIOUS

PDF

77.3 KB Created: 2009-12-05 19:42:76 Authoring application: PDF Library 6.8.3 (via PDF Library 6.8.6)

MD5: 51ba19f9d82c8fd08b70103cf4f78d14 SHA-1: c23cbbb12cf026440e46dafff472876f5188b6ac SHA-256: 8b5f411d6f4e2f6be39aec8205a6996c686e9973c793798a06e6d49140a96fd5

338 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that exploits multiple Adobe Reader vulnerabilities, specifically CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. Static analysis recovered deobfuscated JavaScript (legacy_pdfkit_stage_000.js) which likely serves as the initial exploit stage. The exploitation of these vulnerabilities indicates a malicious intent to compromise the user's system, likely for further payload delivery.

Heuristics 9

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
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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` `4874e3511aa1bf6a84632345a2f234f281b1d251733d32a02772bea6b841a374`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	39066 bytes
`legacy_pdfkit_stage_000.js` `34b733c47035dc02e7510d9a6cbc67a6ce316ad2d4ccae3ddd674c87e3f4a662`	deobfuscated-js	numeric array subtract-key decoded JavaScript at offset 0x1A5	10108 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 9 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.