Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e8e78676e146cec…

MALICIOUS

PDF

35.9 KB Created: 2021-07-07 12:22:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3fd0085c81e686b61a335dc2b83d4632 SHA-1: e4d8974c2c02f04003d3e76bac0c09da06d4b0e4 SHA-256: 4e8e78676e146cec757cbf623d1570b417e5c58ca504f66b5b217e1cf1b6d84b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free spins, directing users to the URL http://netcdn.tw/app/406889139/coin-master-free-spins-link-2021-today-game-hack. This URL is likely used to distribute further malicious content or conduct phishing. The ML classifier strongly indicated maliciousness, supporting the classification of this PDF as a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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 http://netcdn.tw/app/406889139/coin-master-free-spins-link-2021-today-game-hack PDF link annotation
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/mobilehacks4u-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/free-robux-hack-on-robux-store_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/free-money-glitch-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/roblox-mad-city-hack-2021_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/free-roblox-animations_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/roblox-hack-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/roblox-korblox-deathspeaker-free_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/free-roblox-parris-island_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/hacked-skybox-roblox_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/free-robux-account-with-robux_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • https://e-learningmts.muallimienbogor.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work_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
stream_002_off0000348e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x348E 22904 bytes
SHA-256: d0f2b265f92284d4dfaed15561ae6952dc21f9e9128b01843d7f0cb0569f88f8
font_01_sfnt_off00006723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6723 19100 bytes
SHA-256: de35a114d8e8c4fc4d70d52a756b20ceb128d757b6ef9e01fa5e276a673837de

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