PDF malware analysis — malicious · 58efdbf5320a0b37

MALICIOUS

PDF

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

MD5: 50572bcc00cc44ae45b6c742c5d041d2 SHA-1: 8308708ce7b8366d61cacec7da694049f8d8fee8 SHA-256: 58efdbf5320a0b37c58df5792e6a0e4afc04dbef5a0b9c9c89703f7f38bbae45

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1027 Obfuscated Files or Information

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are used to execute embedded JavaScript. Further analysis of the extracted JavaScript (legacy_pdfkit_stage_000.js) reveals it is heavily obfuscated and detected by ClamAV as Js.Exploit.Shellcode-18, indicating it likely downloads and executes a second-stage payload. The authoring application and creation date metadata are also suspicious.

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` `5473db5fb7a9173f7950734accb42498003c8799aa1a7eaadaccb5eecbf0ef25`	pdf-javascript-stream	PDF /JS object 6 at offset 0x14A	580 bytes
`legacy_pdfkit_stage_000.js` `6c10d12f8ef285a22d8f0ccc50cd0f0dc190039a0ef06d6a749c868c50894d3e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x34A	11303 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).

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