Malicious PDF — malware analysis report

Static analysis result for SHA-256 9832c0dde785e357…

MALICIOUS

PDF

34.3 KB Created: 2021-06-18 11:34:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 30f1a191fc80aea441a8b710ac82be48 SHA-1: dbdff46b99b7a72e6365952ad0b90577696994af SHA-256: 9832c0dde785e357cf7a1697f8d62d58680eda62bb158ba760fffc35e735229c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The document body and embedded URLs strongly suggest a phishing or scam campaign aimed at users seeking cheats for popular games like Roblox and Coin Master. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-kick-ban-hack-game-hack, which is likely a gateway to further malicious content.

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-kick-ban-hack-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/now-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/buy-robux-free-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-in-roblox-without-builders-club_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-black-wings-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-coloring_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-blogspot_GM406889139.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_002_off00002eb9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EB9 22852 bytes
SHA-256: 09261a14ca46c6e4e3dc9b4fae4755923f9fb3aa49fd65eaf9f2eb9fe2d93afd
font_01_sfnt_off000061ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EA 18776 bytes
SHA-256: 016458962e29fd965cbc6ad8a75bdc4377c53035eaa48833bd1f8ddcbe08bb16

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