Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b4ca2fa4af6fe3b…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 05:51:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d7c4d5a43d5ac851ab36b629e1672c7b SHA-1: 34ed37179178fe197ee4fdbffb63d77942d07d29 SHA-256: 7b4ca2fa4af6fe3bddf97efadce1c98304c7c69ad53ad8ac55b154bd4d873b04
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 0.9865

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-freebies-game-hack PDF link annotation
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/earnrobux_GM431946152.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/pubg-uc-new-redeem-code_GM1330123889.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/minecraft-114-download_GM479516143.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/roblox-images_GM431946152.pdfIn PDF document text
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/2021-free-spins-coin-master-link_GM406889139.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_off0000524f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x524F 24372 bytes
SHA-256: bb9ddaf8f72a75a30c8664b19f366517ac179beddd4c3b24824ab7debac253d7
font_01_sfnt_off00008a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A12 17868 bytes
SHA-256: 372242737ab0d4eb2ebe68796557a8f5e24de81c1de3b0fc8c95edc19f938617

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