PDF malware analysis — malicious · 292fefde4b80edca

MALICIOUS

PDF

2.2 KB

MD5: ec95b81808e3840e43c4d9bef52312ea SHA-1: eba86dd7586fea3a43530452c8270b8abc227178 SHA-256: 292fefde4b80edca91f2392860605509eca7548b3dab26465795e7ff4e834a82

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 Malicious Link T1204.002 Malicious File

This PDF file contains embedded JavaScript that is triggered by the OpenAction feature, exploiting CVE-2009-0927 and CVE-2008-2992. The JavaScript utilizes eval() and string manipulation to construct and execute code. The primary intent appears to be the download and execution of a secondary payload, as indicated by the heuristic firings and the presence of deobfuscated JavaScript.

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)
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-7304 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-7304
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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_obj0009_000.js` `2488b2ba64b7da9d1b78568ccef23dddafb7f8cb00701b582ba5f4fa42daaafa`	pdf-javascript-stream	PDF /JS object 9 at offset 0xBC	15661 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `e01d14807e9ae735b56fb19cfe2d1244e08c12a883fe7dfccbb124aedb1f2d63`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xEC	5639 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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