Malicious PDF — malware analysis report

Static analysis result for SHA-256 957b686e0b3fcd39…

MALICIOUS

PDF

36.6 KB Created: 2021-05-24 17:38:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5a249beb19c3720d44bdc99d547579f1 SHA-1: 0b90d3d674774be717e7d8d3f16ba93acf1c6b8c SHA-256: 957b686e0b3fcd391a639bd0404c984f8c919f5cffec2f432ca05a048e898516
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains lures for game-related exploits and includes multiple embedded URLs pointing to potentially malicious download sites. The 'SE_SECRET_RECOVERY_LURE' heuristic indicates the document may also attempt to phish for sensitive credentials. No scripts were extracted, but the presence of external URIs and the ML classifier's high confidence suggest a malicious intent to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netcdn.xyz/app/431946152/codes-to-get-free-robux-game-hack PDF link annotation
    • http://hospitalsalamanca.cl/images/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A7 25460 bytes
SHA-256: d552ab93e8ceed5a5cf8297e40c13646b282866366438f1fcbb8d66494140f5a
font_01_sfnt_off00006db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB2 18292 bytes
SHA-256: c4e16f213ba515826b0fc8bd2adb9a42249615e2a7fe5232f5ebe2d4ec6172c1

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