PDF malware analysis — malicious · 4a9d8acdfee0f73d

MALICIOUS

PDF

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

MD5: 3b8499a45488bd41b7480a917a4db156 SHA-1: 573d08b983e3312feb256039f371bdc22575383e SHA-256: 4a9d8acdfee0f73deac78da5d57711c57770f1189f18773e2f859bfd0d9920d4

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell 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 vulnerabilities are leveraged through embedded JavaScript, which is further deobfuscated into multiple stages. The primary function appears to be the execution of this JavaScript, likely to download and execute a secondary payload or exploit further vulnerabilities. The presence of multiple deobfuscated JavaScript files suggests a complex, multi-stage attack.

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` `e56793cf5023c7d3b4ec3b2ecef4d594415aed7c467943197ff7d1fca2cb291d`	pdf-javascript-stream	PDF /JS object 32 at offset 0x380	311 bytes
`javascript_obj0034_001.js` `53fecf93169302f9e2345078f20ecce76ccdcf45621537938571a98433a53782`	pdf-javascript-stream	PDF /JS object 34 at offset 0x48F	491 bytes
`javascript_obj0036_002.js` `c9fab645e44094b573f07f78bfb86e4d6e35fa8d6c68f4fb2919ece2259d98ca`	pdf-javascript-stream	PDF /JS object 36 at offset 0x7C	320 bytes
`legacy_pdfkit_stage_000.js` `1bffff4fdcf3e06591fc481eda0067f58a266bad55926cd9b4fc0643cd975eb8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5F1	1664 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` `60a3ebcd330ed8e2e496a7c053d2ed5fb26c06a0ce51b78fedff3e5aa602cb92`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xC0B	1824 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` `91c592eac316060c3af708dc7600760eefdd7b522dde044befeb0ff79ff45af1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x11F7	2986 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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