Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf0ff901ac0ff600…

MALICIOUS

PDF

32.3 KB Created: 2021-07-03 19:26:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f3e76806bf66262ac9eff594bf6bbb9c SHA-1: 2947df86956eb887c98f3695a6c2506ab4e85463 SHA-256: cf0ff901ac0ff600dfa92d07787833a43a94ba10f2cd51cc2278a9a3ae767aeb
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 0.9824

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/479516143/minecraft-bedrock-server-hosting-free-game-hack PDF link annotation
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-robux-and-tickets-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-hack-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/haw-to-get-free-robux-2021-march_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/auto-jump-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-how-to-get-free-pets_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/fnaf-roblox-fread-bear_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-obby-online-free_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-free-clothes-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/fake-gps-for-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/hack-coin-master-android_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_off00002ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD3 21916 bytes
SHA-256: af33b8f739aa5850546a55a8b892d204f11a19ae42858a9447c804e19910408c
font_01_sfnt_off00005abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABB 18672 bytes
SHA-256: c45ccb7756ad31f0eb1659f3c43916dbd490baa96d6c6b1730beaec095da97be

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