PDF malware analysis — malicious · 491875fee6e2e75c

MALICIOUS

PDF

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

MD5: 1e783468b59b1f758a38bf10d2207f59 SHA-1: ebaf62bc4038a27c4208174d0c147bd286692f3c SHA-256: 491875fee6e2e75c0322d92eacb9912feed057e7694ecb8e48fb7220b3479113

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 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 associated with the execution of embedded JavaScript within PDF documents. The presence of deobfuscated JavaScript files suggests the sample attempts to leverage these exploits to achieve its malicious objective, likely by downloading and executing a second-stage payload.

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` `15db26cac9a3f0a8b0b07eb68ff779a78927f33f2f1156c3ea2d92b2f918df72`	pdf-javascript-stream	PDF /JS object 32 at offset 0x35A	275 bytes
`javascript_obj0034_001.js` `093a8aacfe9abf8dcff3d9d6e212c9357ed9ab3822b52eb96f999fe2ce2304ec`	pdf-javascript-stream	PDF /JS object 34 at offset 0x457	385 bytes
`javascript_obj0036_002.js` `ab888e62dd23c12338a9c1ee7084ef28d951e117b3786513b4489eb81e8de4d6`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	260 bytes
`legacy_pdfkit_stage_000.js` `de0a84f644c282c4c2e84ff204cd581c0f7ea198155403bb40e5214bda4001a7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5A1	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 0xB4D	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 0x10DE	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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