Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce18bc88653fc3d…

MALICIOUS

PDF

48.8 KB Created: 2021-06-10 14:57:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 170f536577d7a27595da3fef89723acd SHA-1: 89e2c078ea9b3b2b6bc75dd6f62128878e8679d6 SHA-256: 0ce18bc88653fc3d90499720b38b5cc1c935060c26eabb8ddb4fd19e073badc4
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 0.9796

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.tw/app/431946152/how-to-get-a-free-radio-in-roblox-game-hack PDF link annotation
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://elearningmts.isl.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005482.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5482 25940 bytes
SHA-256: e0c9f4565bb87772e1d1a1115f75291dceeff44823d49abd3c93810b74039a63
font_01_sfnt_off00009088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9088 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A73 18740 bytes
SHA-256: aebe7a717c4b1b63cb47584bbf7ce15723c90455fa5094dc57ca2f4d1cf92bdd

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