Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a372b6544c556a…

MALICIOUS

PDF

43.6 KB Created: 2021-06-09 03:57:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c4d60610a6b4b544fc37d9068cf7ac7a SHA-1: 15e59aad8fdb49b77cca3c658de2a05a34bf3ff9 SHA-256: f0a372b6544c556a04adb46c29ee118c71f558e4557b07d08e80f2068f6ecd49
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 0.9865

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/roblox-console-hack-2021-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-fe-scripts-pastebin-july-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-tower-battles-money-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/do-you-get-free-robux-with-builders-club_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-coin-master-hacks_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
font_00_sfnt_off00004eda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EDA 24244 bytes
SHA-256: b817194aa623a2802375708668c23e01e1c9d8eba6aa1c6e5cc063cfe9ff5d73
font_01_sfnt_off0000866c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x866C 18584 bytes
SHA-256: 79e0195322a5b14de5d057b4685ae5738dbb6832345390aab7a55927b5c5fdb3

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