Malicious PDF — malware analysis report

Static analysis result for SHA-256 403f591e4bb71b47…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 15:00:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 30b743206909b6103baecb7d0c11597c SHA-1: 10bd74def34b39ff9507c0e76ed0016aba2b7cca SHA-256: 403f591e4bb71b47be389464e61644d0b3b98e0e2784ca3c77d56499867ed3ee
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.tw/app/406889139/coin-master-daily-free-spins-link-today-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/how-to-get-free-unlimited-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/pubg-uc-hack-apk_GM1330123889.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-legit-no-survey2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-codes-2021-october_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-tiny-tanks-hack-for-rocket_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-hack-place-download_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-robux-for-free-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/game-roblox-play-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-boga-boga-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/como-descargar-hacks-para-roblox-prison-life-en-miedafire_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_off00003014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3014 22680 bytes
SHA-256: 26133baefbda5d3798ef3df2ceb6add4dab1a4d885a16b5e5c71aafb6026c929
font_01_sfnt_off0000624a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624A 18940 bytes
SHA-256: 5cc00af5396ac6d0bbe2617822e874747972297797067d6a5c9a01e6a5c32b4c

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