Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f9cd9ea2e48f293…

MALICIOUS

PDF

45.4 KB Created: 2021-06-11 03:22:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7235ae6b7dd1d9f500406d5e402627d2 SHA-1: c59682be599bc8d4b4003169876b1b8b2e4e272b SHA-256: 2f9cd9ea2e48f293f82cc8212543f6205f5bd4f9112bc70c7d9885e7b9fde810
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free generator / game hack" and is flagged by ML classifiers as malicious. It also includes a lure for MFA or one-time code harvesting, suggesting a credential phishing or session hijacking attempt. The embedded URLs point to various game-related hack sites, likely serving as a distraction or initial landing page for a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.tw/app/431946152/how-to-get-2021-robux-for-free-2021-game-hack PDF link annotation
    • http://akbidprimahusada.ac.id/elibrary/repository/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coins-master_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/how-to-hack-other-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/roblox-hack-site-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51D1 25672 bytes
SHA-256: 820a9ab975c47b791f7a0dce94dd792689757d1968222355ff26e382953a8d2c
font_01_sfnt_off00008da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA3 18684 bytes
SHA-256: 6e9c0eecafd635f65838c8dbfb1e23e8457e4c9239d4b33e445d621fd980b18f

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