Malicious PDF — malware analysis report

Static analysis result for SHA-256 7847fe82365433c5…

MALICIOUS

PDF

48.1 KB Created: 2021-06-03 12:32:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ab6e2b895a42a124768864dabb997fd9 SHA-1: 17228b08fc34a8acd57bca2b1119e81d8183bf19 SHA-256: 7847fe82365433c5a0efc031fdb3ca9b6a960ff8ffb1b3bdcf606ab55dca4b28
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.online/app/406889139/where-can-i-get-free-spins-for-coin-master-game-hack PDF link annotation
    • https://opac.itp.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/easy-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-mster-free_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-homepage_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-spins-daily_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_off000052c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52C9 26116 bytes
SHA-256: f58cee3f9ba06bdf3a9927c32ed988c3b21b746c485cf016333708bd33dfcd39
font_01_sfnt_off00008e5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5E 3400 bytes
SHA-256: 75c3a8e6f5c68e0746f893c922e57fd7e888a21fb038f9ae3eedb0a197a59e24
font_02_sfnt_off00009981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9981 18248 bytes
SHA-256: 8779a24c74e66c23b33121dd1a71955adfc2f322ab09b0870da4a74651533123

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