PDF malware analysis — malicious · e780e1a33defe301

MALICIOUS

PDF

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

MD5: 99340be0422197296e959ca938a620ac SHA-1: 9a987897eba00ce2fd17fd85e8ab5edf955bf3cb SHA-256: e780e1a33defe301a32cc36ff81ca820f18a025a54d3120e6a0920e691fdd03c

258 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 through embedded JavaScript. An extracted artifact was also detected by ClamAV as Js.Exploit.Shellcode-18. The JavaScript actions suggest the file is designed 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0012_000.js` `8290aa7e155329145f56ba7c992708975582ad9a89ab2c02b7482b12483608eb`	pdf-javascript-stream	PDF /JS object 12 at offset 0x512	1874 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).
`javascript_obj0028_001.js` `733e08bb85ea0fd25288ea1276754a0a322a59cf10ba2075631509c9b32ace46`	pdf-javascript-stream	PDF /JS object 28 at offset 0x1B9	2070 bytes
`legacy_pdfkit_stage_000.js` `e035896a0dbf7677abe1be9b5dca35c1dfec9ebf059a6fdd830eba0622e0c728`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x866	32604 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 98 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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