Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0fd3e9d2dffd55f…

MALICIOUS

PDF

47.8 KB Created: 2021-06-03 14:10:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 81e217aae15c288007819ffcc49a42cb SHA-1: 379862d77601e1e86a99f44986e6ea772db89428 SHA-256: d0fd3e9d2dffd55fa2eeeedbca9a809b5413f5ec6f12111702b598e9d5a742d8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it links to a game hack lure, specifically for Coin Master. The embedded URL, https://netcdn.online/app/406889139/coin-master-free-spin-link-new-game-hack, is the primary indicator of malicious intent, likely serving as a redirector to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to trick users into downloading or visiting a compromised resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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-free-spin-link-new-game-hack PDF link annotation
    • http://library.umla.ac.id//repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/where-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://library.umla.ac.id//repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/wurst-download_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-free-robux-easy-hack_GM431946152.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_off0000521a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x521A 26656 bytes
SHA-256: 009df1224f755aac9268d1c668f51f12b4254788cab4d215d0775b55f0079e8d
font_01_sfnt_off00008dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEE 2920 bytes
SHA-256: 64c53edae7920bc04119553d13e7f88c7ab8c9d6abd0f5e62be35afdb33f76ff
font_02_sfnt_off00009809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9809 18220 bytes
SHA-256: 416b3ddd7174a4565faeadac95af623a4bced54c3ba49935edef75467b8b172c

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