Malicious PDF — malware analysis report

Static analysis result for SHA-256 28fd758b73e98e2a…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 14:20:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 43dd42d0748b135b30bb209f18f411e8 SHA-1: a9838564d8189836d217f566004e3cb60f26939f SHA-256: 28fd758b73e98e2a7551801af410b5d93ec956e41b58f4efbe79ac82f0314985
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure related to game hacks and free generators, directing users to a malicious URL. The primary malicious URL identified is https://netcdn.online/app/431946152/roblox-account-taker-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially malicious content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • 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.
  • 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.online/app/431946152/roblox-account-taker-game-hack PDF link annotation
    • https://library.stikeswnpalu.ac.id/repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/pokemon-go-free-candy_GM1094591345.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://www.nrzroblox.comIn 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_off00005359.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5359 26656 bytes
SHA-256: 0f66a116f6a47dd3918c81b1962b472e3504fa9e40a13730dd56cd91873d9ce2
font_01_sfnt_off00009081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9081 18428 bytes
SHA-256: a45c208a7567f3e6804dce25d11280ac896a92182563dc04cbc3a4f5e023aa05

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