PDF malware analysis — malicious · 2c6a6f34e43da014

MALICIOUS

PDF

12.1 KB

MD5: 2787f78f8aa690aa1b966cd6a18a3036 SHA-1: 65e1ce47dc64782f87089716b54e3f854b9cb169 SHA-256: 2c6a6f34e43da0148a6ba0898ebad75c30a7b8dd5833ccf2be800ad98ef77b7b

320 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1204.002 Malicious File

The PDF file contains embedded and deobfuscated JavaScript, indicating an attempt to exploit known Adobe Reader vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, CVE-2008-2992). The primary function of the embedded JavaScript is to execute arbitrary code, likely to download and run a second-stage payload. ClamAV also identified 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` `cdbb43c8fe7431e8668761ad426b04d6e5bc8f1d4a5b6f44d1c72b1048a39d9f`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2C2	11514 bytes
`split_char_table_stage_000.js` `e6be1d13a81c99d00793514564c5e920b33f6c274f76e1dfc96389a16c985c18`	deobfuscated-js	split character-table join decoded JavaScript at offset 0x2D1	3864 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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