PDF malware analysis — malicious · 86f63e7249f06b15

MALICIOUS

PDF

3.5 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe (via Notepad)

MD5: 55abce2ba614a691ef4411f06f610dad SHA-1: 2ee6729d265ab062a896f9976a3a02a10c130622 SHA-256: 86f63e7249f06b1576afa0f8553826ec122fb0c0169a26314918b38e8fab2546

298 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF file exploits CVE-2009-0927 and CVE-2007-5659 vulnerabilities, which are known to allow arbitrary JavaScript execution. The embedded JavaScript, particularly in 'legacy_pdfkit_stage_000.js', is heavily obfuscated but likely responsible for downloading and executing a second-stage payload. The ClamAV detection of 'Pdf.Exploit.Agent-35931' and 'Js.Exploit.Shellcode-18' further confirms its malicious nature.

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)
ClamAV: Pdf.Exploit.Agent-35931 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35931
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.
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_obj0006_000.js` `9f17a33a91e8e161bb8c3d5dd2cd10c5bdc4829a97ddecd780f956aca73f543e`	pdf-javascript-stream	PDF /JS object 6 at offset 0xB3F	195 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `b728531d46b12e6e63fcb00ac7d1c47a7589a4cb3fd39963030ebc452968acce`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x16E	5151 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.