Malicious PDF — malware analysis report

Static analysis result for SHA-256 484360f4bdeb65d7…

MALICIOUS

PDF

47.0 KB Created: 2021-06-04 03:23:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1bdb307cc4e49326d4bd2363e277dd28 SHA-1: c872c6b0127955309184cc4e99d8a1805be4f514 SHA-256: 484360f4bdeb65d7a47ea288b942c4f4eb1b4c31cffc9747fec33a91d33a9b63
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free generators" for popular games. The primary redirector URL is https://netcdn.online/app/406889139/coin-master-stop-attack-hack-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering lure designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-stop-attack-hack-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-minecraft-for-free-ios_GM479516143.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_off000050a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A0 25888 bytes
SHA-256: ab3b04ba2c6ce84c8b0981e5f2de4934d244cd4f5c3c4a5bf4efc32c38690287
font_01_sfnt_off00008b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B90 17892 bytes
SHA-256: 39a576627da682e915740756597514a1a33942882bdfaf8ae0370b937314ba67
font_02_sfnt_off0000ac75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC75 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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