PDF malware analysis — malicious · ccf7048eec0086f3

MALICIOUS

PDF

18.7 KB Created: 2010-01-01 07:27:45 Authoring application: Fexaxououazobb

MD5: 7cd3f54972817f626767f28ad533c48c SHA-1: 52f6b7a978393769bd9f6f9b12fa9944660fcc53 SHA-256: ccf7048eec0086f3cd5f3fd4f96e7b97c0be56fb62f665b41d51c5182aac6c43

318 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged to execute embedded JavaScript. The ClamAV detection of 'Pdf.Dropper.Agent-7305146-0' and the detection of 'Js.Exploit.Shellcode-18' on an extracted artifact further confirm malicious intent. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

Heuristics 8

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: Pdf.Dropper.Agent-7305146-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7305146-0
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` `6608d6fb93333636b1e982a42332e9ea854f52d55f5a8e0cebcc6e6c8785b3b7`	pdf-javascript-stream	PDF /JS object 12 at offset 0x50B	1573 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s).
`javascript_obj0028_001.js` `207073263c6b794db0bfbb52322fb6a1d035aa129c7bee95e701dad963761dbd`	pdf-javascript-stream	PDF /JS object 28 at offset 0x1B9	1798 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `4858dfadbf9874594df9789d7ea1ee44efcccffc0802a36ccd3c803fd3eb620d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x7E3	33930 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 81 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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