PDF malware analysis — malicious · 1c66f66bb14975ea

MALICIOUS

PDF

4.5 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe

MD5: 47f57ebcf43e1ff0d8d865e60f530806 SHA-1: 9b8e49f10ba25bf7729e2f7b91f512819781f849 SHA-256: 1c66f66bb14975ea72095cd0ddda11de718a0b84494d773a08b6414f508d7e68

318 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains multiple critical heuristic firings indicating exploitation of known Adobe Reader vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) via embedded JavaScript. The deobfuscated JavaScript, legacy_pdfkit_stage_000.js, is extensive and likely responsible for downloading and executing a second-stage payload, as suggested by ClamAV detections on extracted artifacts. The file is identified by ClamAV as Pdf.Dropper.Agent-7235954-0.

Heuristics 8

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: Pdf.Dropper.Agent-7235954-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7235954-0
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `daa8624ada451e4d8acb6edc2cbae2ec46e3ec10a0caddd3d5402fc964e8bf7f`	pdf-javascript-stream	PDF /JS object 6 at offset 0xD89	205 bytes
`javascript_obj0016_001.js` `a013c301f8f4171f23af496f98a43b217d4cb47e4e17b47eda4be21c5977b13a`	pdf-javascript-stream	PDF /JS object 16 at offset 0xE60	159 bytes
`javascript_obj0026_002.js` `f330153aafe681bc9733b4d8637c1a83ebd1d1e1dc01a1f57d39bb691a8df774`	pdf-javascript-stream	PDF /JS object 26 at offset 0xF2C	67 bytes
`legacy_pdfkit_stage_000.js` `25abf27a4c41eaf807008d67e257fdc3feeddc21accd55360ee9cca359d3d286`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1BB	6177 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.