Malicious PDF — malware analysis report

Static analysis result for SHA-256 35d5bcf5e1e875ab…

MALICIOUS

PDF

35.1 KB Created: 2021-07-07 15:32:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 44a8908213c58b269c3978cfd7a33ed3 SHA-1: 1649f044b684b66cac7041aee95f99656a4bac52 SHA-256: 35d5bcf5e1e875ab8f3a0c4f23e598f48207ab031e47925efe3f178741996eb6
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/479516143/minecraft-112-hacked-client-game-hack PDF link annotation
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/roblox-name-changer-hack_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/roblox-aimbot-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/what-is-the-best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/c-design-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/ash-greninja-free-shopping-in-roblox-on-roblox-shopping_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/como-ser-hacker-en-roblox-en-celular_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/roblox-admin-commands-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/how-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/how-to-hack-lumber-tycoon-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://elearningmts.alhidayahwanti.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-obc_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_off0000352f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x352F 22148 bytes
SHA-256: c023c2741fcbde7c8e4693e473b01199d35fa35354cf791c13ac6de29d07a6b3
font_01_sfnt_off000065f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F2 18504 bytes
SHA-256: 1c6239c4e7240bb93b61e959f2b21d4e00e02324577494d7f11381c67a244304

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