Malicious PDF — malware analysis report

Static analysis result for SHA-256 12208446461d98b1…

MALICIOUS

PDF

36.2 KB Created: 2021-07-06 11:34:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ccc6af0d20c1e82dd0b5300bf401cd96 SHA-1: df6df4cba7312912e6ba19bfb8035540af0e7138 SHA-256: 12208446461d98b1c44e0fc28eafb5b06ecfe500b5e275b9ee5ba4d3b468aaf3
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/hacks-para-coin-master-game-hack PDF link annotation
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-robux-mods_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/pokemon-go-basic-vs-premium_GM1094591345.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/how-to-no-clip-in-roblox-no-hack_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/mcpe-116_GM479516143.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-robux-master_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/gamepasses-free-pastebin-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-robux-codes-download_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/roblox-fedora-free_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/how-do-you-get-free-roebucks_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_off000037b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37B9 22992 bytes
SHA-256: 5a6c2694d90fa5709ff12eb1c44a42c29ea458fef497c05bd4b646dd9f22f2b1
font_01_sfnt_off00006b72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B72 18160 bytes
SHA-256: 5676d42287b09385bfa51395fc3f84c79b5f17e4b07494173d03168f2b88060a

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