Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b70c022ac9651f6…

MALICIOUS

PDF

37.1 KB Created: 2021-06-17 19:44:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 53c11f9c8add1fad809a84687ed9522f SHA-1: 1552e465d485c2419a019b9bcca8d06a7895c717 SHA-256: 0b70c022ac9651f61b9b341b05907fbec5604b709ca72904756ca0428577d4bb
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/free-robux-no-survey-or-download-2021-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-ban_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/games-on-roblox-that-have-free-boombox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/cheat-pour-roblox-mac_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-delta-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-reedem-code_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-accounts-with-robux-that-work-2021_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_off00003470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3470 23796 bytes
SHA-256: b8f84a10372d5b4f750dafba22968e9c2990365263eb4b81104671bf83426d14
font_01_sfnt_off00006942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6942 19992 bytes
SHA-256: 06a304429a13013d2c8f5c3c18e0c4bafa3db6c14bbdd652636c7929aad6ecb3

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