Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2e2cf2a5978b48f…

MALICIOUS

PDF

42.3 KB Created: 2021-05-11 04:32:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 523cf5503d05d1fe9801c18fdbdd5c6d SHA-1: 15f5f964e5ef864d64cefb53ecdbf493b18a36e2 SHA-256: a2e2cf2a5978b48ff8334bfb805e871a99fb1f97265e2987b1205e5ee5a42b16
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-free-spins-daily-game-hack PDF link annotation
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/wurst-commands_GM479516143.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/free-games-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://perpus.stmkg.ac.id/stmkg-perpus/repository/free-robux-games-that-actually-work_GM431946152.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_003_off00004923.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4923 25500 bytes
SHA-256: 67bc79de2fd6d0d030a1c3d48d10a794fd747f60f452c4cd49404d2930199b94
font_01_sfnt_off000082f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F9 18308 bytes
SHA-256: 220bb6194b1ab8a2bb399ca4a862914ac8d15b354bb0df2c737bc67699221dc9

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