PDF malware analysis — malicious · 3e5508476f0bdb6c

MALICIOUS

PDF

4.0 KB Created: 2009-08-31 19:43:57 Authoring application: Eblasha 1.5.6.4 (via PDF Library 8.10.3.4)

MD5: 2633348ecfdcdcbc040cc9dbd6dafc06 SHA-1: 9899bd18a5a376ebea96d09bbc90353742bf0c5c SHA-256: 3e5508476f0bdb6c44ba1e05c784269ced5c3443e3f23e11967069b1c484ac55

268 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains embedded JavaScript that leverages multiple critical vulnerabilities (CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) related to JavaScript execution within Adobe Reader. The heuristics indicate that the JavaScript is obfuscated and likely decodes a payload. The ClamAV detection of 'Pdf.Dropper.Agent-7252709-0' further supports that this file acts as a dropper for additional malware. The primary attack pattern involves exploiting these vulnerabilities to achieve arbitrary code execution.

Heuristics 8

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)
ClamAV: Pdf.Dropper.Agent-7252709-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7252709-0
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` `9c94c4166ff2cbc8b772b0bc7b4bc49de0ec25a11784013131ea7cb3b6c88dae`	pdf-javascript-stream	PDF /JS object 13 at offset 0x37C	16447 bytes
`numeric_charcode_stage_000.js` `4056651f3268beafa910e1f6237a7b774169264b2842a1f0ad0778955aa44c1e`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x3C9	4938 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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