Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0f981c59193cec…

MALICIOUS

PDF

42.1 KB Created: 2021-06-03 14:48:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: dd3621f1d79d6cfd19cd8e648fc106eb SHA-1: 7af94dfbf220ad20b1f251bf67badea60f5b73f1 SHA-256: 6d0f981c59193cecf2590bdf052ed0e62bc6cf8469dbe8b56e9c013ed00b2047
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 0.9874

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 https://netcdn.online/app/406889139/coin-master-mod-game-hack PDF link annotation
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/100-robux_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/how-to-hack-a-roblox-account-easy_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_004_off00004c57.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C57 24004 bytes
SHA-256: 3accf37ee03cee2ac24a40b863f183896081bf319cba655f1d4f0e7048dd616e
font_01_sfnt_off00008354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8354 17720 bytes
SHA-256: e3dc30cd69473f08b9483bb660e9aeaccc8f6f74c3e4f353697525059d592d8d

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