Malicious PDF — malware analysis report

Static analysis result for SHA-256 3247dd8baf6bda11…

MALICIOUS

PDF

46.0 KB Created: 2021-05-12 15:30:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ec3c019c9354ef48657632a99aa5dd4a SHA-1: 8db0b7abb27d8c2e55a8f2d6faab989eafc25484 SHA-256: 3247dd8baf6bda1187fdcf50153adf591c1e131a211c1608ac2a7c05e1f52333
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 0.9432

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.xyz/app/406889139/coin-master-free-spin-daily-link-game-hack PDF link annotation
    • http://oca.undil.tl/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004adb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ADB 25636 bytes
SHA-256: 8576e7e8d59e32d0fda09769c5778c5b8d23bde1b0ab656dfe3be72218ca01cb
font_01_sfnt_off000084a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A0 3380 bytes
SHA-256: 1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57
font_02_sfnt_off00009089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9089 18476 bytes
SHA-256: 2ce97cbb308bf5ba938525f141fd625062fba94b419d6e9602582d12aef06769

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