Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d1fbd0899581b9…

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 09:58:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5bd66f1a7f72abf28eb26068003398b9 SHA-1: 322a011bdf8e56fbb1651f4caf90c93d2c4b5e79 SHA-256: 89d1fbd0899581b9dd30c10c94ad5156eeafe9cb0bd750ecde8b301a0aaaf867
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-here-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/robux-codes_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/get-free-spins-on-coin-master-links_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_off000050cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50CF 25212 bytes
SHA-256: 3d35a08ae2f618950af2c0263a3c40fe5ba7d6046403d2a56a3eb7422433bb1c
font_01_sfnt_off00008b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B06 17716 bytes
SHA-256: c15a8689411d8cca9ab0759ab4c496fe9b4353d676dd738e300719e9588112ed

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