PDF malware analysis — malicious · b90d71c4d2e10c1d

MALICIOUS

PDF

6.2 KB Created: 2009-01-35 62:12:26 Authoring application: Adobe

MD5: c350094f4242ecb13ccb7924db758dc3 SHA-1: 4e8622cadf0b34db03d5d8ccdccd8425b3f04c1f SHA-256: b90d71c4d2e10c1ddf2b367c2101565e15cae67a228ce3d0631309c38b65d149

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple critical heuristic firings indicating the exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged to execute embedded JavaScript. The embedded JavaScript streams, particularly the deobfuscated versions, are likely responsible for downloading and executing a second-stage payload. The presence of multiple exploit attempts suggests a high-confidence malicious intent.

Heuristics 6

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)
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `aabb2f374ab8b61110228f23a8192c18f8009da2a8135e326fb409ace2bfa48c`	pdf-javascript-stream	PDF /JS object 32 at offset 0x356	274 bytes
`javascript_obj0034_001.js` `898e43c05388f65c27c6148d26bb38fe3fc25ee4fbba4449d6ad1c729841efd3`	pdf-javascript-stream	PDF /JS object 34 at offset 0x452	375 bytes
`javascript_obj0036_002.js` `843e3740565adbeb4cdcd4773053c580e6f5a27b97b1866c322f64e5bdc0dcc7`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	254 bytes
`legacy_pdfkit_stage_000.js` `de0a84f644c282c4c2e84ff204cd581c0f7ea198155403bb40e5214bda4001a7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x59B	1676 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `89747115a0c2859a29790bcc1302f256940ebf818804d9c0d37ad82490c82a9f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xB47	1842 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_002.js` `959242c5d95abe63ae41f9ae34e2f25098d08c0d6eeafb64d65e7ecf1f3305f3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x10D8	3022 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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