Malicious PDF — malware analysis report

Static analysis result for SHA-256 0830fe7ab9fedb16…

MALICIOUS

PDF

54.6 KB Created: 2021-05-16 16:03:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dfac7c4035d4169d2ea11e6a71e0ccbd SHA-1: ad5134cc7a918e438b16e68311bcbe78c3710698 SHA-256: 0830fe7ab9fedb16ff0694708bf8fd380f7c0e6b9bfce2a227048ba2c79f9634
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of game hacks and free in-game currency to trick users into clicking malicious links. The embedded URLs lead to redirectors and further PDF files hosted on suspicious domains, indicating a chain of lures designed to lead the user to potentially harmful content. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8531

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.xyz/app/406889139/coin-master-time-hack-2021-game-hack In PDF document text
    • https://liftkos.com/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://liftkos.com/images/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • https://liftkos.com/images/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://liftkos.com/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://liftkos.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://liftkos.com/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E5 25804 bytes
SHA-256: 639ef939d077ab9792ae495918e1d6ec862756e1c0fbebeb797a3e1f11979eb4
font_01_sfnt_off0000860c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860C 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off000090d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D7 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a3fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3FD 18380 bytes
SHA-256: d61a4547520ea8cafecc3ed258c73b3244e9bc9b68d98ecd8e3226df3b2774a6
font_04_sfnt_off0000c65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC65A 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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