PDF malware analysis — malicious · a769fc0bb46bb6c1

MALICIOUS

PDF

298.3 KB

MD5: 17ee794d7bf19bc97c8b1130d6efd0d9 SHA-1: 21e802fb8e8c636a99e6d024e17cafeb25b4d6db SHA-256: a769fc0bb46bb6c168fcf29b18e9e0157c828b84aa9e75b571678413bacb40bd

318 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple critical heuristic firings indicating exploitation of known PDF vulnerabilities, specifically CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. These vulnerabilities are leveraged through embedded JavaScript, which is further confirmed by the presence of extracted JavaScript artifacts. The ClamAV detection on both the original PDF and an extracted artifact (Pdf.Exploit.Agent-36307 and Js.Exploit.Shellcode-18) strongly suggests malicious intent, likely to download and execute a second-stage payload.

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: Pdf.Exploit.Agent-36307 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36307
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.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `2fa7b3ec06262fbde0cd91b0ee8dea956a5c1922291bf9c5ce511ca3c4681bcf`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	3193 bytes
Detection ClamAV: Pdf.Exploit.Agent-36307 Obfuscation or payload: unlikely
`legacy_pdfkit_stage_000.js` `d0a7299b4b2ee2d5fc534dd42a8149d060f216c54266004d54e6fa752a6199e5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xE94	20099 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.