Malicious PDF — malware analysis report

Static analysis result for SHA-256 97bf50e24587016b…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 19:38:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: aff0200b0cf9c12c5d59c900303a8446 SHA-1: ab8742bb8e5b943cd2b66cf7dc0cb4e7f83e9d6a SHA-256: 97bf50e24587016be1d097475e6986bbd36c221dea5399e655e0e21d61d8410e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector. The document body and embedded URLs reinforce this, pointing to sites offering 'free followers' or 'hacks' for games like Roblox. This suggests a social engineering tactic to trick users into visiting a potentially malicious site.

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/free-roblox-followers-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-no-password-and-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-know-if-you-have-been-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-hack-android-1_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/hack-de-como-tener-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-martial-arts-battle-arena-cheat-engine_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-hack-roblox-dinosaur-simulator_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-sunset-city-money-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-dusk-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/tiktok-free-movies-site_GM835599320.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-and-tix-generator-online_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/asshurt-roblox-free_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_off00003072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3072 22552 bytes
SHA-256: 4d6a512a588f1c8d9e90677a7efe34aeb724d8e911c0431d7e77d818f20e520a
font_01_sfnt_off000062e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E4 18812 bytes
SHA-256: f16093150c20a19768467b383ff509f763a908f44934bdce6d8fbc41de4fad00

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