PDF malware analysis — malicious · 7d3a546f276e3b25

MALICIOUS

PDF

92.2 KB

MD5: 193401d57a26464b070dcda8d137bcd2 SHA-1: fb8b23758a14fc3d0d0ca90a433ec2ea418ca754 SHA-256: 7d3a546f276e3b2588c91a87fd79bd1f1008a38225eecd17063842e1d33e0450

318 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious Script T1059.001 Command and Scripting Interpreter: JavaScript T1059.003 Command and Scripting Interpreter: Windows Command Shell

This PDF file contains embedded JavaScript that exploits multiple known vulnerabilities including CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The heuristics indicate that the JavaScript is obfuscated and designed to be evaluated by the PDF launcher. An extracted JavaScript file, legacy_pdfkit_stage_000.js, was also detected by ClamAV as a potential exploit. The overall behavior suggests the PDF is a dropper designed to download and execute a secondary malicious payload.

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-36307 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36307
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.
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` `5b499d2a00c079fcbeb68ebe9c7cce1ccd1f9309bda68125f781e31286fdbf9a`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	2802 bytes
Detection ClamAV: Pdf.Exploit.Agent-36307 Obfuscation or payload: unlikely
`legacy_pdfkit_stage_000.js` `b9b51bc3143d89f25a6c303b286c32b99eb9c0f6268d66c24b7ed29f4831d984`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xD0D	6054 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s).

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