PDF malware analysis — malicious · 45031e1671d1306a

MALICIOUS

PDF

4.5 KB Created: 2010-02-12 07:08:47 Authoring application: ae41a4

MD5: f53c7e678fbe7a457754b93ac99115bc SHA-1: 5959f895fff453740e1b8f04b467b3ecf6eb2c07 SHA-256: 45031e1671d1306a3f17b032c956214d0ae0bc0fd3a704e4ead3fe651c41457c

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659 through embedded JavaScript. An extracted JavaScript file, legacy_pdfkit_stage_000.js, was flagged by ClamAV as Js.Exploit.Shellcode-18, suggesting it contains shellcode. The embedded JavaScript actions are designed to execute arbitrary code, likely to download and execute a second-stage payload.

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_obj0014_000.js` `f8aa0d297e8fb406390650eeab684f1086d0f7d7b00c7fdd899a4642e23981e6`	pdf-javascript-stream	PDF /JS object 14 at offset 0x1B8	363 bytes
`legacy_pdfkit_stage_000.js` `c896318e6dede4a717a86ae4238aea00e1d28db814cc0ee1fed2c104e68c3bc4`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x3DF	6433 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.