PDF malware analysis — malicious · d10d54c307223777

MALICIOUS

PDF

6.9 KB

MD5: 9c9ceb9396eb524338219780f748c84a SHA-1: c83774893fbfd286ac43534be9ed24737ec8d79e SHA-256: d10d54c307223777ae2a6cfc1670d8b1e7009046ba24881b9b38538b18112e6c

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a CVE-2008-2992 exploit (util.printf) suggests the JavaScript is intended to be executed in a vulnerable PDF reader. The ClamAV detection and obfuscated nature of the script point towards malicious intent, likely to download and execute a secondary payload. No specific family could be identified.

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: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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` `c8da40fd836574b4cc9d8dae0f4f510d90ea7bed4c920ee8022a01967ebd1028`	pdf-javascript-stream	PDF /JS object 6 at offset 0x197	5975 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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