Malicious PDF — malware analysis report

Static analysis result for SHA-256 425d862dfd933e03…

MALICIOUS

PDF

35.8 KB Created: 2021-06-27 21:24:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: a7dd91c6fc18887e00c8ed510a644b49 SHA-1: c7e9a75e36d9fd0f3e0e2b858c7e323aa6774e79 SHA-256: 425d862dfd933e0356e8ec8a160adc49eb8af52a35701d947e8a2b20f1dde9f2
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.co/app/431946152/roblox-bit-slicer-speed-hack-game-hack In PDF document text
    • https://library.uigm.ac.id/repository/blockland-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/como-tener-robux-hacks_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-skin-strucid-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-free-troll-outfits_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hacking-for-games-on-android-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/beyond-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-for-more-cash-in-roblox-tycoon-games_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/como-hackear-una-cuenta-de-roblox-a-un-amigo_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-com_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-win-free-robux_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
font_00_sfnt_off000035ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35EF 21940 bytes
SHA-256: 1080bfb704c8326f468135a2ccc400145979dd436b7e22bcfd773fb1ced0e48b
font_01_sfnt_off0000667f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667F 19232 bytes
SHA-256: 3034837cce25238a09bd9cea9a3b9978b50aed92e9ccdcf764a6bc9f5cb6a932

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