Malicious PDF — malware analysis report

Static analysis result for SHA-256 13db37df7ca55297…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 18:05:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d20a69231d054d0396c5d62395f9ab48 SHA-1: 8b1ae51ca68412f216350e7731cd007a210a0d07 SHA-256: 13db37df7ca55297d1507f2f0b3e105754c1dc8b35a843e8d08ea4dc61c94b02
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/431946152/roblox-moderators-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/legit-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hacked-to-stop-getting-killed-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-phantom-forces-hack-aimbot-redboy_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/photostar-hack-client-inject-error-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-fashion-frenzy_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/me-han-hackearon-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-have-script-for-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/descargar-hack-phantom-forces-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/comment-hacker-le-cataloggue-de-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-robux-buzz_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/fast-cheats-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-speed-hack-on-roblox-ma_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-scam-games-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/robux-hack-pastebin-youtube_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-a-hacked-roblox-account-bac_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-robux-easy-2021_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
font_00_sfnt_off00002ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA8 22500 bytes
SHA-256: 0cb767a94092f30a1da89bbd27ba93525b9b0d13b52b5696ddc023fc1137fe3c
font_01_sfnt_off000060db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DB 18960 bytes
SHA-256: c9d852ee3d1c2440833dae6aa7c06b9bea994edf728c721d6eb665774c0b0edb

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