Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a77bf20801a1213…

MALICIOUS

PDF

35.8 KB Created: 2021-07-07 18:59:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e769a967f39e24b423ba95c4355c02a1 SHA-1: 11de780121dad92d1addc4c58b9a546aa773bc3d SHA-256: 2a77bf20801a1213609c63878fe61e981e799ed07ce2c3f45b89b0c4e862a7d8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link disguised as a game hack generator, which redirects to a malicious URL. This lure is intended to trick users into visiting a potentially harmful site. No scripts were extracted, but the embedded URL and heuristic firings strongly suggest a phishing or redirection attempt.

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-hack-apk-ios-download-game-hack PDF link annotation
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/roblox-promo-codes-october-2021-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/easy-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/freerobux-co_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-link-app_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-robux-with-out-human-ver_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/case-clicker-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/how-to-buy-robux-for-free_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_off0000340a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x340A 23004 bytes
SHA-256: bad2ce3ab2fb6d1b6d4ac598c90a24e643c4b83011c78ca00474a3e4f0d78775
font_01_sfnt_off000067eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EB 18760 bytes
SHA-256: 38610b9978a6d602fbc41685ad0ae40442350b3c21ae0be27d2d81fd40d33c9e

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