Malicious PDF — malware analysis report

Static analysis result for SHA-256 10c06a233dd89735…

MALICIOUS

PDF

34.2 KB Created: 2021-07-08 15:53:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b323dde8e9c010132a6840d67eca42ae SHA-1: da00c7712f9c7786f00f687c1f67f6532393e886 SHA-256: 10c06a233dd8973551fdcadffca9b2e9127504dc166e69dcc6ea02b311d9fe54
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-earn-game-hack PDF link annotation
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/earn-rbx_GM431946152.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/how-to-be-builders-club-in-roblox-free_GM431946152.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/gaming-cheats-robux_GM431946152.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/assassin-roblox-download-hack_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_off0000304b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304B 22284 bytes
SHA-256: 1359996fe290174eaa0ec0a55bc04a2535d7e718e4211a3de98a87c45a7a5d81
font_01_sfnt_off00006215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6215 18484 bytes
SHA-256: ec480973b95906799ecbce8e9211940b8d4b6d02a368574357cd37401f952f8b

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