Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a57598fe8dcd781…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 00:39:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e8db5696b48b6e31b6ca1cf53dbaf7cf SHA-1: df2d439b4ae41c292f4cd0f8edc18de3bb5ecdcc SHA-256: 1a57598fe8dcd781e289075c412945f199d043043d825bfa7b40326b22c2c867
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/download-hacked-games-com-coin-master-game-hack PDF link annotation
    • http://library.asih-husada.ac.id/repository/comment-hack-roblox-unboxing-simulator_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-anti-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/dll-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-free-robux-fast-hack_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-hack-on-roblox-wikihow_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-troll-shirt-free_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-generator_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-boxing-simulator-2-hack-xbox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-mcso-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/avatar-the-last-air-bender-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-swat-shirt-free_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-ban-hack_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
stream_002_off0000319a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x319A 22304 bytes
SHA-256: e9c5653b69de7d5ec86d96232a0f8ef899faae1a12c615134748c9f32946ad42
font_01_sfnt_off00006323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6323 18844 bytes
SHA-256: d6bbba44fdf6698b8b7aa96d1af5e520d01dd7071d16206ec7b75659562237bd

Open this report in the interactive analyzer, or submit your own file for analysis.