PDF malware analysis — malicious · 27fbe090ddccd272

MALICIOUS

PDF

4.4 KB

MD5: faf9cec8c7758f67914bb0cc29c54073 SHA-1: e3f7e94fade0aea845ff6f14d587ea0540174571 SHA-256: 27fbe090ddccd27288196165451ff7e9aee2565745ddd4b938d96c0529b829a1

348 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript and triggers multiple critical heuristics related to known PDF reader exploits (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, CVE-2008-2992). ClamAV also detected it as Pdf.Exploit.Agent-36898. The embedded JavaScript, deobfuscated as info_stride_js_000.js, is likely responsible for executing the exploit chain, leading to a malicious outcome.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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-36898 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36898
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_obj0020_000.js` `f18d9eabd946db28e3e3fc20ab7612f61ac7498a036d75469834563c97e8b927`	pdf-javascript-stream	PDF /JS object 20 at offset 0xE00	267 bytes
`info_stride_js_000.js` `963a79788e9414d09588491a13ddc32cec227cf59cc0e65318c3fda67ef3bacb`	deobfuscated-js	PDF /Info fields via stride 7	2896 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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