Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbb245654e0af4f9…

MALICIOUS

PDF

46.2 KB Created: 2021-06-07 14:18:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 788bdee96a01dd66a82343324b756234 SHA-1: bd77a08487925e1436352e7afd09ec90da8862fc SHA-256: cbb245654e0af4f9d954169ec7296e7ddc578d554f7d02345c81a1f915bbfb62
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 0.9864

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/roblox-metal-detector-simulator-infinite-money-hack-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-in-skywars-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-2021-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_off000050c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C8 27056 bytes
SHA-256: 41b71ceb0d4ebb7fd7532801a6debff86ead62a0ea4a8ded892171d63d8fbab1
font_01_sfnt_off00008f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F0A 19348 bytes
SHA-256: 6e3aae6af724836ef04fca06baeb76a748084cb7179123e5a2eea522f582033c

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