PDF malware analysis — malicious · 400bdb46d3a99351

MALICIOUS

PDF

22.8 KB Created: 2009-05-01 21:21:45 Authoring application: tvEeSFCPx (via NeTSnrx)

MD5: 249d545f14fca95a3ce692fdfeb49155 SHA-1: 2e1fb9ae48dbeb84813de788673cbfc5b04c6c6c SHA-256: 400bdb46d3a993514e42d8332cf52313c33df7c92e44b49100269844af46257a

398 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 JavaScript/JScript

This PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. These vulnerabilities are triggered by JavaScript code embedded within the PDF, which is further obfuscated using `eval()` and `unescape()` functions. The presence of multiple JavaScript streams and a deobfuscated stage suggests the file is designed to download and execute a second-stage payload. The ClamAV detection as Pdf.Dropper.Agent-7253609-0 reinforces this assessment.

Heuristics 10

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-7253609-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7253609-0
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `65d66b43b712d430e2ea46ebca82ef2177420b452bd3c0e5149abdafa091bd6e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x22D	22121 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 2 long hex-escaped blob(s).
`javascript_obj0007_001.js` `6f4d5a4cea589075c5e28f4ee76493289487282682491d275655bbfd83d29c93`	pdf-javascript-stream	PDF /JS object 7 at offset 0x22D	20089 bytes
`numeric_charcode_stage_000.js` `ea488c85c9765c82c3b90849bd0afd916fe5dd29e613a5211af6ce6f16ccbd70`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x236	4697 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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