Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c6fd471a69ebf33…

MALICIOUS

PDF

42.0 KB Created: 2021-05-12 06:13:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 139b968848b0750692eee5ffd92a70ed SHA-1: 77182af9654ae149c9c2b704558c75de1f0a4650 SHA-256: 3c6fd471a69ebf336b217154c09e73ccfc9bba6240d67dfe19d877c895f3ef9c
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1553.005 Mark-of-the-Web Bypass T1071.001 Web Protocols

The PDF document contains a lure for game hacks and free spins, specifically mentioning 'Coin Master Free Spins Youthnow'. It includes a high-risk link to a redirector, likely designed to harvest credentials or deliver a second-stage payload. The presence of an MFA lure suggests an attempt to steal session tokens or abuse multi-factor authentication mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/coin-master-free-spins-youthnow-game-hack PDF link annotation
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/robux-games_GM431946152.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-18_GM431946152.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • https://kab-gianyar.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-group_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_003_off00004a7f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A7F 23932 bytes
SHA-256: 3d0e78ee64a862a4c5fb7ba5a56f824e3852dc14808d811fe9102d2940725d0a
font_01_sfnt_off00008112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8112 18516 bytes
SHA-256: 2d9e93df29aa51ca1a7d67cf2404b131feb62ab03f4d0f4d21f6bd2b7fc99d70

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