Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed19a75baaa873d…

MALICIOUS

PDF

34.7 KB Created: 2021-06-25 19:54:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e54085baf2f2550b60686f0f5fbda8a1 SHA-1: 51531376cfa5d52817b2cfc3a101c29e016204a6 SHA-256: 7ed19a75baaa873db2b37007fd8bbdfebcd40d0c72f4bad5e55cfa88c72cd8e1
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-stands-online-cheats-game-hack PDF link annotation
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/minecraft-free-version_GM479516143.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/roblox-cheat-engine-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-infinite-robux_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/rc7-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/does-cheat-engine-execute-scripts-into-roblox_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/is-tiktok-free-on-iphone_GM835599320.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_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_off00003229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3229 22032 bytes
SHA-256: 4fba6e1bf3896d7298c705f98b931027f4f9f6f7fb64eb2d8d0164ff20003dc0
font_01_sfnt_off000062ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AB 19048 bytes
SHA-256: 0bffb964442c49dc2a56b4b2f5934f22738a0c14c74d5f91d8ea80505c886b73

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