Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2c545925e9268e…

MALICIOUS

PDF

45.7 KB Created: 2021-05-11 14:18:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: ad83376cc402d5dde42be3e1f2241511 SHA-1: 0aec7fc5a80ed62117e582738a70693f139d0719 SHA-256: af2c545925e9268e4b501e9f1f9b748ddc7c9c0675e6eca2b04b49e123b2d8c9
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/daily-coin-master-link-game-hack In PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000482c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x482C 26880 bytes
SHA-256: 61e47b259a3544c24e5a1212088dac65d781cc6b5668a6468dcd5a034a9a4668
font_01_sfnt_off0000859a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859A 3204 bytes
SHA-256: 34e186eaedd0abe30d9918006f165105e5268ee5cd317aca3337fe6c60666134
font_02_sfnt_off0000909d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909D 18136 bytes
SHA-256: 982ad4b1f6b69cb91937238f9970daf2e783e2300abd9bcc91da09ddfa737630

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