PDF malware analysis — malicious · 26119049ac1a1c69

MALICIOUS

PDF

12.2 KB

MD5: 2657f96056f53b8fd766ca235d9ee222 SHA-1: 104562dc55923b8c1cc27b3f7c545dbb7752d6b8 SHA-256: 26119049ac1a1c697ccacac4d131d32e652ef17146a6ec3af58b857145151681

320 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 Malicious Link/Object

The PDF file contains embedded JavaScript that leverages multiple known Adobe Reader vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) to execute arbitrary code. The deobfuscated JavaScript stream, identified as 'split_char_table_stage_000.js', is indicative of an exploit attempting to download and run a secondary payload. ClamAV also flagged this as Js.Exploit.HTML-28.

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: Js.Exploit.HTML-28 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Js.Exploit.HTML-28
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` `e126a9e2e77af08bd8f2bca5150beacca19d31b1393fe2bd0109dfd22ec96ef0`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2C2	11542 bytes
`split_char_table_stage_000.js` `912791874871a63e226f9a98b89d05d81130239c079273c00a22811dd86badce`	deobfuscated-js	split character-table join decoded JavaScript at offset 0x2D1	3936 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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