Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7737fe7e46779ae…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 14:28:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b5641840f4ddbe4f59f851f77506e481 SHA-1: 41d55c2e23b1ae1bb6ff58b33e1164151760dfa9 SHA-256: d7737fe7e46779aeefd6b99c5d258f88c7e59c795831e12ded8f719fbe20420f
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 0.9976

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.online/app/431946152/sites-to-get-free-robux-game-hack PDF link annotation
    • https://perpus.poltekkesgorontalo.ac.id/repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/real-robux_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/roblox-free-printables_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://192.168.0.99/%20%3Cp%3E%3Cp%3Ehow%20to%20make%20free%20shirts%20on%20roblox%20without%20bc%202017%3Cp%3E%3Cp%3Eroblox%20hack%20ios%3Cp%3E%3Cp%3Ehow%20do%20i%20get%20free%20robux%20on%20my%20ipad%3Cp%3E%3Cp%3Efree%20exploits%20website%20downloads%20roblox%3Cp%3E%3Cp%3Ehow%20to%20hack%20your%20own%20account%20on%20roblox%3Cp%3E%3Cp%3Echeat%20extension%20google%20pour%20cheat%20roblox%3Cp%3E%3Cp%3EClick%20on%20the%20computer%20icon%20located%20at%20the%20top%20left%20corner.%20Depending%20on%20the%20game%20you%20may%20have%20to%20hold%20down%20the%20sprint%20key%20in%20order%20to%20take%20full%20advantage%20of%20the%20speed%20hack.%20%D0%9D%D0%B5%20%D0%B8%D1%89%D0%B5%D1%82%20All%20%D0%B7%D0%BD%D0%B0%D1%87%D0%B5%D0%BD%D0%B8%D1%8F%20Cheat%20Engine%20%D0%BA%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D1%8F%20Cheat.%3Cp%3E%3Cp%3Efree%20robux%20promo%20codes%20december%202017%3Cp%3E%3Cp%3EThe%20Admin%20Commands%20in%20Roblox%20are%20codes%20to%20be%20written%20in-game%20to%20carry%20out%20amazing%20features.%20Access%20the%20admin%20command%20by%20typing%20:cmd%20into%20Answer:%20No.%20ItIn 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_003_off0000535d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x535D 25004 bytes
SHA-256: 50cbe667fd26bbff5f9048278d4c83a4f47548ed207b423b37d78f4c6b4ac53c
font_01_sfnt_off00008c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2A 17660 bytes
SHA-256: 6e23e88c51d2f93f0df95efb001f419be02462921b3859389ed0cc79c072af70

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