Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f50b924642522b9…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 16:56:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a63f6db785143f89b2872a9278cf4016 SHA-1: 7ab099ef1e99e4da8ea01c610416e9bbf9a6c27d SHA-256: 6f50b924642522b93ec315912eb284d70969a7f61983b38baa9fbddbee81ca15
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/431946152/roblox-premium-free-game-hack PDF link annotation
    • http://elearning.miscm.id/__statics/gudangsoal/files/roblox-new-shoot-through-walls-hack_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/counter-blocks-roblox-offensive-hacks_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/roblox-weird_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/how-to-fly-jump-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/how-to-get-robux-free-on-ipad_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/best-free-roblox-injectors_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/robux-hack-2021-creado-por-hackdejuegosapk-roblox-tm_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3361 22112 bytes
SHA-256: 3ab265f542aba8d585f19bcf6198b8dab6ce06abce54984f026709e6ece761b0
font_01_sfnt_off0000644e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644E 19324 bytes
SHA-256: c8a2b1ae1c1508803a3d8c69ed3754c7f46d1063272e7458056edfc0801350b1