Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f0155a25db6137…

MALICIOUS

PDF

37.4 KB Created: 2021-07-16 05:54:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-13
MD5: 00aa2f8403ca424a5034450d04c32f9f SHA-1: 64baf0690a4e95c98fa8f1e18d6e30e54f86afbb SHA-256: f2f0155a25db613746d445907726516497b53d8d7c6cf60ccee0d53000a82382
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-spin-generator-tool-game-hack In PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/roblox-free-suit_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/roblox-android-hack-mod_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/coin-blogspot_GM406889139.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/how-to-change-your-face-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/free-robux-generator-kid-friendly_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/addrbx-earn-free-robux-by-doing-tasks_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/how-to-execute-hack-scripts-in-roblox_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/hack-spin-coin-master-2021_GM406889139.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_002_off00003a6b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3A6B 23848 bytes
SHA-256: 639c28c3c915b59a7eb5524c3e6cc9824092bb002077b4e03a8ba7e25cb31b8f
font_01_sfnt_off0000709b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x709B 17968 bytes
SHA-256: ea67d54f04c33a937dae932ca1fc44fc221a1b4b4b4a53e5a275faf6159c5a59

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