Malicious PDF — malware analysis report

Static analysis result for SHA-256 64599ec25586f718…

MALICIOUS

PDF

34.2 KB Created: 2021-07-09 07:40:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0bc862f3fa0fb9899d1931fcf9102d14 SHA-1: 106fe30f827b08b5bcebd9fcb5c3994964fb7f75 SHA-256: 64599ec25586f718bf50872b9bf985d8511cf067e4b36f4ed9635f6ad0e43c30
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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-gifts-game-hack PDF link annotation
    • http://educhina.mn/editor/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-how-to-hack-filtering-enabled-games_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/robux-hack-and-bc-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-tiktok-coins-2021_GM835599320.pdfIn PDF document text
    • http://educhina.mn/editor/files/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/robux-hack-no-human-verification-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-free-download-meepcity_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-bandana-on-roblox_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/apocalypse-rising-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/hack-robux-gratis-como-tener-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/hackear-roblox-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-ios-robux-cheat_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_off00003173.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3173 22684 bytes
SHA-256: ce9a7d12ad935b60c3010781c773e8a2da92a497d97862d3dcd50f61e45f57be
font_01_sfnt_off00006406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6406 17996 bytes
SHA-256: 0554876b2ab95b57b2a8903cbabfbfa90e4f9f04422ab63317bc25d957b52972

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