PDF malware analysis — malicious · 8a4b0b0bdec680d7

MALICIOUS

PDF

8.3 KB Created: 2010-06-30 03:04:13 Authoring application: Zw5uOO (via DCVZB4)

MD5: 1bc806f73df2b059c853d0fa370ff4d8 SHA-1: ac0ab2a4ed8070059593b06156c35170e98893be SHA-256: 8a4b0b0bdec680d76e72e8e0933a0f09b57cde9261d584e3485135db6e12bd86

338 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.007 JavaScript

This PDF file is malicious, leveraging multiple critical vulnerabilities including CVE_2009_0927 (Collab.getIcon), CVE_2007_5659 (Collab.collectEmailInfo), and CVE_2008_2992 (util.printf). The presence of embedded JavaScript and an OpenAction trigger indicates an attempt to execute code automatically when the PDF is opened. The ClamAV detection further confirms its malicious nature. No specific family could be identified, but the exploit chain is clear.

Heuristics 9

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. (matched in decompressed stream)
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. (matched in decompressed stream)
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. (matched in decompressed stream)
ClamAV: Pdf.Exploit.CVE_2009_0927-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.CVE_2009_0927-1
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `8fa8400a3995e2f8fd707870ecc3c0a33d88b74bddaf30ac50156dce3252a3c5`	pdf-javascript-stream	PDF /JS object 7 at offset 0x228	7282 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 7 eval/decoder/string-building token(s).

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