PDF malware analysis — malicious · 7946bb14f3cffba9

MALICIOUS

PDF

6.7 KB

MD5: 42442c966c1919494ef934539c313ed7 SHA-1: 47caa80a48f580b70a9d0dacc4a8f13ea4fa3d52 SHA-256: 7946bb14f3cffba9120a61dd11b3fbcfc0db3068d9098ca1850c8cc95c542177

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the unescape function and a printf call, indicating exploitation of CVE-2008-2992. This exploit is known to be used for delivering malware. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the heuristic firings and the ClamAV detection signature 'Pdf.Exploit.Agent-21765'.

Heuristics 6

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. (matched in decompressed stream)
ClamAV: Pdf.Exploit.Agent-21765 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-21765
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `199a80c31941ecd7a11a2b9f625361bdd21382d8c3fce2353e96d66111d9948d`	pdf-javascript-stream	PDF /JS object 6 at offset 0x195	5782 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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