PDF malware analysis — malicious · b34aefc72340a955

MALICIOUS

PDF

2.2 KB

MD5: 25f53aa95f2189389cfba16627f1b3c7 SHA-1: df7783844880015d5c5b01bc0720a1fdaf1b0045 SHA-256: b34aefc72340a9551c20119fdab04e91a71039c24c729a5731d2547a71ef7847

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript triggered by an OpenAction, exploiting CVE-2009-0927 and CVE-2008-2992. The JavaScript utilizes eval() and is obfuscated, indicating an attempt to download and execute a secondary payload. ClamAV also identified this as Pdf.Dropper.Agent-7294648-0.

Heuristics 8

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)
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.Dropper.Agent-7294648-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7294648-0
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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_obj0009_000.js` `ecc1d4061938bca71951165f21773f6a3e8c63e41b507c51ac5c15cfb379302d`	pdf-javascript-stream	PDF /JS object 9 at offset 0xBC	15487 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `c672ae3ae809a4e526cea738f651d07233ccd7bc59c200d2bb791647ca80722d`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xE7	5573 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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