PDF malware analysis — malicious · 3d66dee0d52ad5ae

MALICIOUS

PDF

7.8 KB Created: 2009-12-04 19:44:10 Authoring application: PDF Library 4.7.8 (via PDF Library 4.6.1)

MD5: 929cde8930f68de2ed906e4aee348bdc SHA-1: 5058d9725835ed9e7b1521de83afe5f696bbe037 SHA-256: 3d66dee0d52ad5aeed08fd92f1421c671ffc16b33a52f60c52afd8bff30c3a28

296 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file exploits multiple known vulnerabilities including CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992, indicating an attempt to execute arbitrary code. The embedded JavaScript, particularly in js_property_alias_stage_000.js, is obfuscated but likely facilitates the exploitation. The ClamAV signature Js.Exploit.Shellcode-18 further confirms the malicious nature of an extracted artifact.

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.
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
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `2c664ecad2f318cf9c319eb0014d60385824fcb686dece06d0c5c3a183413bf6`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	37377 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` `29d968f26c0d7ad2ebb3768a73bfcef051f3986907e62add14c5d289f15c54ef`	deobfuscated-js	JavaScript hex-escape property alias normalized stage at offset 0x268	9357 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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