Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b651ee14be55d3a…

MALICIOUS

PDF

42.0 KB Created: 2021-05-11 16:06:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 6bbc2c131b819bd43d2c33aa194759c3 SHA-1: 948dc3eda529b8847f93b5f1e6e665f5e1762524 SHA-256: 2b651ee14be55d3a5ba477a23eb660ae6bdb3ab9527918f60e2d5d5a2266256a
154 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/479516143/toolbox-for-minecraft-pe-ios-game-hack In PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-spin-link_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-hack-no-human-verification-or-survey_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_off00004bad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BAD 25388 bytes
SHA-256: 21fd953f5d793c82d09fbeb760ffd075da3072518cd4b66f1f51fefcd00a8358
font_01_sfnt_off00008556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8556 18308 bytes
SHA-256: dc3ccbb79e5b5e3c2e3f1df788125855a4eb2a90c1a23b445c8862bc1b3de69c

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