PDF malware analysis — malicious · d715e7056290058c

MALICIOUS

PDF

7.7 KB Created: 2009-10-19 19:42:71 Authoring application: PDF Library 9.7.8 (via PDF Library 6.1.10)

MD5: 402c1b6a42d569429e0f3e11485de376 SHA-1: d20388af706cd411595e7452f2da74b359a608ee SHA-256: d715e7056290058c8356651af8bc22ee55fab65ce01eb9de8e4072d32d4e1390

316 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

This PDF file contains embedded JavaScript that leverages multiple CVEs (CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) to achieve code execution. The JavaScript is obfuscated and appears to be designed to download and execute a secondary payload, as indicated by ClamAV detection of 'Js.Exploit.Shellcode-18' on an extracted artifact. The use of hex-escape properties and specific JavaScript functions points to a common exploit delivery technique.

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 detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
Suspicious extracted artifact high 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.
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `5a89a1ebf1392f00f153e7198a92553294f6b3e1cd0cfe5c49c58dc11dbc1cbc`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	37281 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long hex-escaped blob(s).
`js_property_alias_stage_000.js` `ad77e727eb45e1b5d41f806d736cf4a9ac80d38fa015d7f6e8ef7e4e44786d0e`	deobfuscated-js	JavaScript hex-escape property alias normalized stage at offset 0x268	9333 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 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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