PDF malware analysis — malicious · e37f8b7a29e3e58e

MALICIOUS

PDF

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

MD5: 4b0ea72c1136648a1c19bd59fbefdabc SHA-1: d73f42d74e7763abf2aa1eb60abac1662dd1cf67 SHA-256: e37f8b7a29e3e58e8170d4e37b8d5e60c4da600a583f74314091bf3ca129e464

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These exploits leverage embedded JavaScript, which is further evidenced by the extraction of several JavaScript files. The primary function of these scripts appears to be the execution of arbitrary code, likely to download and execute a secondary payload, a common technique for initial access.

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` `4c93e94158f4dfabe3f2a5cdddfed2274bd90fbbeccf3e430a0dc974affe4307`	pdf-javascript-stream	PDF /JS object 32 at offset 0x2F1	237 bytes
`javascript_obj0034_001.js` `f5e6d9259eba71669a5f7af73aa84a85e6e120dd4569c9f2b486d6f5289f1922`	pdf-javascript-stream	PDF /JS object 34 at offset 0x3D7	327 bytes
`javascript_obj0036_002.js` `a9247043304b362adc29763782d132c2a6d94852943caa5d9b032e23dff5cb85`	pdf-javascript-stream	PDF /JS object 36 at offset 0xAC	178 bytes
`legacy_pdfkit_stage_000.js` `8eeeea4e231fe3ba8b79434c13d2000ed00c1f5a9b039090f0a07e8f3d940d1b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x505	1651 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` `2744ae0eea65d75a9302c7d99ae16814ae90ce5f83379899eaae40106cf446a0`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xA95	1803 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` `721f67b3bdb69c48ca68104f925923a6e9d73a6161991616a4218a741337c341`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1000	2955 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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