Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a3065a544cdfd09…

MALICIOUS

PDF

13.1 KB
MD5: 900ffacfd7c3362347d4c8ae85c8d477 SHA-1: b06640215b4ccffe7380eaac86d2152540b484b2 SHA-256: 5a3065a544cdfd09e56118172cd090d54d5dff58d09ba228e2103a4b00139f5d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file was flagged by ClamAV as Win.Exploit.Jailbreak-1, indicating it likely exploits a known vulnerability. The embedded URL http://jailbreakme.modmyi.com/wad.bin is highly suspicious and likely serves as a download location for a secondary malicious payload. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9056

Heuristics 3

  • ClamAV: Win.Exploit.Jailbreak-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Exploit.Jailbreak-1
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://jailbreakme.modmyi.com/wad.bin
    • http://www.apple.com/DTDs/PropertyList-1.0.dtd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_cff_off00000458.bin
541db2a5ec9dfad01a2521834a89123aabd2a7eda10bcb3ed2ebb49f0b533fb1		 pdf-font-stream PDF embedded font (cff) at offset 0x458 40085 bytes
Detection
ClamAV: Win.Exploit.Jailbreak-1
Obfuscation or payload: unlikely

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