Malicious PDF — malware analysis report

Static analysis result for SHA-256 8741e2965a9d153b…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 06:22:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a7d4356e9ecea8fdb4178325761eef5d SHA-1: 8b525ada1ef6c1b3de97a37afd52fd41c2c54288 SHA-256: 8741e2965a9d153baf75178c9789867c3b9958f5b66ea4d7d07241fcfdc52b65
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.co/app/431946152/roblox-games-that-promise-free-robux-game-hack PDF link annotation
    • http://mbbs.hr/files/r67-roblox-hack_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-hack-roblox-players-for-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-robux-stolen-account_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-robux-hack-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/free-rich-in-roblox-accounts-with-limiteds-dump-2021-working_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/robux-website_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-ftw_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-dbz-super-saiyan-war-hack_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/speed-hack-assasin-roblox_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off00002fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD2 22792 bytes
SHA-256: 425d7ff5f4944327d22f0ec3994da52fbd65e7b9e194e154660815cabc21af06
font_01_sfnt_off000062fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FB 19596 bytes
SHA-256: 034f7306fdeb22674f31c9864a5db13c41086d193c8120197e54c1fa28ef7179

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