Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afec068fc2cb63d…

MALICIOUS

PDF

43.1 KB Created: 2021-05-10 15:03:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 588e6c1bf0acc0f6c97bf2f70701c23a SHA-1: 14d4d806afaedb3dac8525b3ad7bf056b2dff0e7 SHA-256: 4afec068fc2cb63d9e8e0c42d9f1f62f016e5ad212f98ffcf7cf67c0a4a6df58
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/mcpe-master-hack-coins-game-hack In PDF document text
    • http://perpus.masda.ac.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-free-online-games_GM479516143.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_off00004b57.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B57 26080 bytes
SHA-256: 940e89618e62a399b8ebf6eb5f0ed27f394d87a9144b7b18f255b742d4644906
font_01_sfnt_off00008753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8753 17892 bytes
SHA-256: 0c63e033d5ffe887ffec85b5cafaf72e8c864209b86636c790ff2846ce341ff6