PDF malware analysis — malicious · 9ccd0712a4876667

MALICIOUS

PDF

5.8 KB Created: e1svrt Authoring application: Adsfgddfobe (via sfgasdfgsd)

MD5: 71467def70417a773768b1d0963e96cd SHA-1: 10c585a287c77e53705ce0754b76ed6560bd064a SHA-256: 9ccd0712a4876667cdc181c7cd918462ed775d5f1623ffb6688f3716f5356b38

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file leverages multiple critical vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) to execute embedded JavaScript. The extracted JavaScript, identified as legacy_pdfkit_stage_000.js, is heavily obfuscated but detected by ClamAV as Js.Exploit.Shellcode-18, indicating it likely downloads and executes a second-stage payload. The PDF's authoring application and creation date appear to be obfuscated or malformed.

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_obj0006_000.js` `be98c5cb84bb314eca32c1c676e9348d78c7e2b7419383353b65fb8f2de18520`	pdf-javascript-stream	PDF /JS object 6 at offset 0x14A	615 bytes
`legacy_pdfkit_stage_000.js` `8c122231630f8bc9abf4f6aa118a3efe38a60f66f37fb31f589854e0e7c2819f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x359	11570 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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