PDF malware analysis — malicious · ead609b3d9e8a4b5

MALICIOUS

PDF

1.5 KB

MD5: 30acf50ca07fe0615761b59aa5e7176f SHA-1: 860ea01aa11cbe7bd1e006c7afb4424fad78d826 SHA-256: ead609b3d9e8a4b51132e5d2eb20c5fe138eac3c810e01f05f6678e3bc4d0903

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2008_2992 heuristic firing suggests exploitation of a vulnerability related to util.printf. The ClamAV detection of 'Pdf.Dropper.Agent-7685845-0' further confirms its malicious nature. The embedded JavaScript, likely obfuscated, is expected to download and execute a secondary payload, a common dropper behavior.

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.Dropper.Agent-7685845-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7685845-0
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_obj111111_000.js` `0200f2049fbb6d2d0b137a415dfb7cae140902bc9ea36bc75a860c01e7702660`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	2477 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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