PDF / .PHP malware analysis — malicious · 302eb7062a3aec96

MALICIOUS

PDF / .PHP

180.3 KB

MD5: 0156da098ed37ece1715e35c8f96d0ac SHA-1: 9320b600fe39c07ff0ed63bfeb6b2449de6c1171 SHA-256: 302eb7062a3aec9619fffafb7a2f0559f5e09b58ac4f1579c23d724a6ad73e1e

258 Risk Score

Malware Insights

MITRE ATT&CK

T1204.001 Malicious Link/Object: User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: JavaScript T1059.007 Command and Scripting Interpreter: JavaScript

The sample is a PDF file that contains embedded JavaScript. Critical heuristics indicate exploitation of CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992, which are known vulnerabilities in Adobe Reader. The embedded JavaScript, identified by ClamAV as Js.Exploit.Shellcode-18, is likely responsible for executing a second-stage payload. The obfuscated nature of the JavaScript and the exploitation of multiple CVEs suggest a downloader or exploit kit.

Heuristics 7

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 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` `eac1ee4af08f4dedacdf1cc76246f1110d9e60fdada360c154e01e86bcbfe265`	pdf-javascript-stream	PDF /JS object 8 at offset 0x217	2716 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `cea1a2f37daee7ddd70f1a531e47b853422696541a03a92c8833dca13baee252`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xCEF	20111 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s).

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