PDF malware analysis — malicious · 4ef837e860196c63

MALICIOUS

PDF

4.4 KB Created: 2010-01-26 12:27:47 Authoring application: a4e612

MD5: 64f078687f94d9cab167ba83f070afb9 SHA-1: 91d6dce413af684613e2ccbf797749218689bfae SHA-256: 4ef837e860196c63a37b9d704bab9539c141692c5013e811a6f99ac05109f0cb

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits multiple known vulnerabilities including CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. The heuristic firings indicate that the JavaScript is obfuscated and likely used to download and execute a second-stage payload, as suggested by the ClamAV detection of 'Js.Exploit.Shellcode-18' on an extracted artifact. The attack pattern is consistent with a malicious PDF dropper.

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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0012_000.js` `bdc1cecd847cee894f241002a5898c53ae7fb7be0e367c65337bf6bfa6c25c26`	pdf-javascript-stream	PDF /JS object 12 at offset 0x20E	108 bytes
`javascript_obj0028_001.js` `1700139d4371021cda305142ba4ef1322e44b4455be655c2c8b91f7fce75f367`	pdf-javascript-stream	PDF /JS object 28 at offset 0x2CD	336 bytes
`legacy_pdfkit_stage_000.js` `2d5466586eef5ee0d9fe0fcbd8f093ebc937077dc512d52e8496505a08bcb239`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x47B	7873 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).

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