Malicious PDF — malware analysis report

Static analysis result for SHA-256 8860391d889ab38f…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 13:04:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: dfc837d2159f784506cb9a7f55349dc3 SHA-1: 18b43c1ebb9a728aadfc132f5a08798053840bd4 SHA-256: 8860391d889ab38f8eccc2f3cbc7e776df0f1da99b4040411dd65143f8ee2d89
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-hack-tool-download-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/earn-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-kid-friendly_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_off000051f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51F0 23872 bytes
SHA-256: b03ee4cb7dfe9adf4bf0ef8c8434a377f811d97657c4754326ada8618751bb64
font_01_sfnt_off000087b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B7 18296 bytes
SHA-256: 679f4024a0f63c0836264bcfe59f64cb99cb733805cdde821f10afb71f032f62

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