Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a5e379658f49e6a…

MALICIOUS

PDF

35.1 KB Created: 2021-06-28 22:08:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 752e857b88084a6ea712275cfc739c28 SHA-1: baf94335220e93ff8e91523e89ce8411083f67c1 SHA-256: 2a5e379658f49e6a49563a96f39f3de3334d5e0df3b8aaee0ffe6531ace790af
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-ninja-legends-hack-apk-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/code-for-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-da-hood-hack-or-glitch_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/pokemon-go-free-gift-codes_GM1094591345.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/arsenal-roblox-hack-2021-august_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacker-de-robux-para-roblox-real_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox-like-john-doe_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-executor-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-fly-in-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/unlimited-robux-level-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-on-mobile-ios_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-dll-hack-scripts_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-script-executor-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_off00003076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3076 22596 bytes
SHA-256: e67f730d0c01e42309e22a9286f27c31b66591ed4e48ca0fe52567ce9741d063
font_01_sfnt_off0000634f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634F 19316 bytes
SHA-256: 604942d9f540952a6577e7f2e20efe8e6ffc437b40d10051a057daf3876cc887

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