PDF malware analysis — malicious · 7a83c504b13ee1ce

MALICIOUS

PDF

7.7 KB Created: 2009-10-14 19:45:80 Authoring application: PDF Library 4.1.10 (via PDF Library 10.1.10)

MD5: 40397d66881725c0d18d3f5b4a6b0027 SHA-1: 7d756e2e100e53ac4600ffa8cbe398855410a98a SHA-256: 7a83c504b13ee1ce7c3bf71c302d3e894a5bf43e65ba3c6709e030e38b284735

316 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious Link

The PDF file contains embedded JavaScript that leverages multiple critical vulnerabilities including CVE-2009-0927 (Collab.getIcon), CVE-2007-5659 (Collab.collectEmailInfo), and CVE-2008-2992 (util.printf). These exploits are designed to execute arbitrary code, as indicated by the ClamAV detection of 'Js.Exploit.Shellcode-18' on an extracted artifact. The obfuscated JavaScript streams and the use of ASCIIHexDecode filters further suggest malicious intent to bypass detection and achieve 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 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` `2f9a0fb049f5011b1c3f18c464dfc3575ca56d3b090a701572289856d3344394`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	37593 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` `df23923770af2d6ce609e6591009c6ac8aeabf1c393a78c0db0419a167bf53a5`	deobfuscated-js	JavaScript hex-escape property alias normalized stage at offset 0x268	9411 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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