PDF malware analysis — malicious · 44b23cbc1c89cb34

MALICIOUS

PDF

6.3 KB Created: e1svrt Authoring application: Adsfgddfobe (via sfgasdfgsd)

MD5: 40b0ab9c2a90508cd54b4afd06160ab5 SHA-1: e803fee5ca255bd2357d50a1b24df04b80b140d8 SHA-256: 44b23cbc1c89cb34f69719ac7b78e4162270543524a1f82da04cb57dd81837f5

318 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits multiple known vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) related to PDF reader functions. The heuristics indicate that this JavaScript is used to launch further malicious activity, likely downloading and executing a second-stage payload. The presence of a deobfuscated JavaScript file, legacy_pdfkit_stage_000.js, further supports this, suggesting a downloader or exploit loader.

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.Exploit.Agent-20825 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-20825
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_obj0006_000.js` `89c27da283a184e3fb0d28b51db65eab11d2488c475f9454b77ef629b293ac68`	pdf-javascript-stream	PDF /JS object 6 at offset 0x14A	559 bytes
`legacy_pdfkit_stage_000.js` `47a0354c756a08cc1d9157b359a765a6d5c73681baac673294be9d21d1f1c008`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x32B	11387 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 12 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.