Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ab546e45e67b45e…

MALICIOUS

PDF

47.0 KB Created: 2021-06-04 04:02:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 46374e810cc3d3de00596e6446ffd545 SHA-1: b85584195b8f23393f96eb448a50a695835222b5 SHA-256: 5ab546e45e67b45ebc83322832cb9b5c1fab13ffd31913a707d548a156ce05ea
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack redirector, specifically mentioning 'Coin Master Free Spin And Coins Links'. The embedded URL and document body content reinforce this lure. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/406889139/coin-master-free-spin-and-coins-links-game-hack PDF link annotation
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/hack-download_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51BF 25324 bytes
SHA-256: e7eb1465a2fc043fe1b0d04e4f2dc6f387e5e9060bc4892ab4ddb2a4622aa59e
font_01_sfnt_off00008b22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B22 2884 bytes
SHA-256: 678d7d160b7643e846db78f399167b18b196c803f3d8f1e68c2e0b9c867f94e3
font_02_sfnt_off00009501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9501 18228 bytes
SHA-256: ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2

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