PDF malware analysis — malicious · 48747457b87bff07

MALICIOUS

PDF

5.0 KB Created: 2009-08-26 19:49:43 Authoring application: Eblasha 8.1.7.5 (via PDF Library 5.1.8.4)

MD5: 2bbf014a1752d92b91e3452f9a235464 SHA-1: 88241bd39e4b1a86de2e42363da5695f9eb67d59 SHA-256: 48747457b87bff07486506f88fa544ef6f8867ff4b73cd51274625ab870b062a

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF document is malicious due to the presence of embedded JavaScript that exploits multiple known vulnerabilities including CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The JavaScript is obfuscated and decoded using numeric character codes, and it is likely designed to download and execute a secondary payload. The extracted file 'numeric_charcode_stage_000.js' is a strong indicator of this malicious activity.

Heuristics 7

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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (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.
ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85

ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `67f727d73b9d6505d6136a919ed5013eceb3a1ea4efb7eef9d5bc86b2ddc79db`	pdf-javascript-stream	PDF /JS object 13 at offset 0x37C	27220 bytes
`numeric_charcode_stage_000.js` `b320897d8565667a9b870d3d440205fa83f41887e13168a4fbc0d2eecc317fcd`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x3C9	8340 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 9 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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