Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d31de3ad44a84d6…

MALICIOUS

PDF

49.5 KB Created: 2021-06-03 07:54:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-14
MD5: d23834fae8399795c90f59e3bfbdb674 SHA-1: decb304a82b8ef68b58df63ee895a4df01cf8045 SHA-256: 0d31de3ad44a84d66cab58f117d0f3c770995d0ec2da65142a5692581e66c06f
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/479516143/client-minecraft-game-hack In PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-often-pubg-uc-turn-into-cancer_GM1330123889.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-cards-for-free_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_004_off00005444.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5444 29608 bytes
SHA-256: 84cb671cb297b5498702f32d56c474d0e7f0155ecc140cc03fe3051f9e87ba90
font_01_sfnt_off00009740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9740 2820 bytes
SHA-256: 34dd21cbcbbf8680f9624d5ddfa25e49232e6768200f74ddacb5347fd7a5f6dc
font_02_sfnt_off0000a0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0E1 17644 bytes
SHA-256: 5ce6a379ae9f46d42512ba88e57e1f5186d7f60265a685918f3434c96255be0b

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