PDF malware analysis — malicious · 19f7ad20896f5be1

MALICIOUS

PDF

12.7 KB

MD5: cd0422f6736f85cc2d1106b562df4112 SHA-1: 8fd5596d85f52dacd41ec4fd29d9d4a63b0a12fd SHA-256: 19f7ad20896f5be1a838f1c3c944bd1fcff26cd75a17dfa92801550d39428929

318 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript that exploits several known Adobe Reader vulnerabilities including CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The deobfuscated JavaScript indicates it is designed to download and execute a second-stage payload. The ClamAV detection of Pdf.Exploit.Agent-36291 further supports its malicious nature.

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)
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-36291 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36291
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_obj0076_000.js` `1deb28c0b74371bbd02bdc2a37d931a4f7e9a195b1b237b81d765bc44b37a2ee`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11885 bytes
`legacy_pdfkit_stage_000.js` `24925ab7079f51d644484b1a79699f1219a5656a7581c79906e445c64dd78ed3`	deobfuscated-js	string-index array decoded JavaScript at offset 0x369	3870 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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