PDF malware analysis — malicious · 27714e02cedc35d8

MALICIOUS

PDF

4.9 KB Created: 2010-02-12 06:23:54 Authoring application: y79d3c414

MD5: b6fedc8f648529eda502529eb660398a SHA-1: 8ca08ea4ad91fd164ba95b5a59a1c15458bf77ca SHA-256: 27714e02cedc35d89321c6e04bcf074debe535711e4c0f7882cb63ebaf1d609c

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages multiple critical CVEs (CVE_2009_4324, CVE_2009_0927, CVE_2007_5659) to execute arbitrary code. The heuristic firings indicate that this JavaScript is designed to download and execute a secondary payload, as evidenced by the ClamAV detection 'Js.Exploit.Shellcode-18' on an extracted artifact named 'legacy_pdfkit_stage_000.js'. The attack pattern is consistent with a PDF-based exploit attempting to deliver further malware.

Heuristics 7

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
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 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_obj0004_000.js` `2f7f6f7588cc9915bb4b744e21702771209ead83ce7e047e3be420cc0d5812cd`	pdf-javascript-stream	PDF /JS object 4 at offset 0x102A	681 bytes
`legacy_pdfkit_stage_000.js` `6d872da60ac4d595c14c29fb72c6b7ccae3dbe184f1f6302b3155ab0b9f7dc2c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x305	5750 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 11 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.