Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f88dead0678bf7…

MALICIOUS

PDF

45.8 KB Created: 2021-06-11 03:25:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 86d510f8582f251c5394fee7a4b339cf SHA-1: 279d983528943f449308fb51dbe7c265278bfa94 SHA-256: f7f88dead0678bf77ca3a02929504f90e3d8017ead70609bf5fb2a5492848c2b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack generator, a common lure for malicious content. The embedded URL, 'https://netcdn.tw/app/431946152/hack-para-sharkbite-roblox-game-hack', is presented as a call-to-action within the document body. While no scripts were explicitly extracted, the nature of the lure suggests it's designed to trick users into downloading or executing further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/hack-para-sharkbite-roblox-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id/repository/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-do-you-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spins-today-daily-links_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_004_off0000520c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x520C 26444 bytes
SHA-256: 1d3cb60dfd5327de06122993bda78464a5ec33a7d0e85ec503c617b8756b2069
font_01_sfnt_off00008f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F62 18728 bytes
SHA-256: 2b77d961c07e8d8c0974bea6acdb5dd3adfa0712fc62d438feb7d5049b03cb20

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