PDF malware analysis — malicious · e1c2a077a0fe42c1

MALICIOUS

PDF

7.6 KB Created: 2009-11-07 19:41:60 Authoring application: PDF Library 8.1.7 (via PDF Library 5.6.2)

MD5: 5b0958108e2946552a7d40f8dfd08370 SHA-1: 7a5cec154a9f05a457bad1a660aeb6b0a66baef1 SHA-256: e1c2a077a0fe42c1b838d636b1b5385c04b1c1d0c3aafdfe47091739e1956dd0

356 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that leverages multiple CVEs (CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) related to Adobe Reader vulnerabilities. The JavaScript is obfuscated and uses hex-escape encoding, indicating an attempt to conceal malicious actions. Static analysis detected suspicious JavaScript streams and identified the file as a known exploit (Pdf.Exploit.Agent-9826). The primary attack vector is the exploitation of these PDF reader vulnerabilities to execute arbitrary code.

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. (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.Exploit.Agent-9826 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-9826
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` `0e84f290bfc5ae4ef919e1ffd6cee01da015f2e211da894632fd022aab94972a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	37209 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` `4f294cc97c2ac6cf37e097f3bcfe0a2ca5806c87b9cf8340e73593dc9523b7da`	deobfuscated-js	JavaScript hex-escape property alias normalized stage at offset 0x268	9315 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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