PDF malware analysis — malicious · e7eb63a3b85fa3e0

MALICIOUS

PDF

4.3 KB Created: 2010-02-14 09:38:14 Authoring application: c1054ef163f0

MD5: f5dfad1ca534629cf1c81c72f6138661 SHA-1: e2c045a625be3a336aa5f8ec99e13eb073bdb3eb SHA-256: e7eb63a3b85fa3e001f9336719695a6a58977e4ba182f02a41b94cdcd5e950d9

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF document exploits multiple known vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) by embedding and executing obfuscated JavaScript. The embedded JavaScript, identified as legacy_pdfkit_stage_000.js, is likely responsible for downloading and executing a second-stage payload, as indicated by the ClamAV detection 'Js.Exploit.Shellcode-18' on an extracted artifact. The attack pattern involves luring the user into opening a malicious PDF that leverages these exploits.

Heuristics 7

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)
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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_obj0011_000.js` `d582cbf6023119bce70e2189e1c286a9496832db94b57c82c97d9536ba78ea46`	pdf-javascript-stream	PDF /JS object 11 at offset 0xDDD	550 bytes
`legacy_pdfkit_stage_000.js` `e5f453db0502952ae29617d1f710608649f4bf9de7df50b2b43ebecfcda40c6d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2ED	7144 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 16 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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