Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc86fa7dc10cacb6…

MALICIOUS

PDF

43.3 KB Created: 2021-05-11 14:15:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d473c06f54282802293f8a89b65ff7c2 SHA-1: f422b11de2d11c682bf8496d7d86be546d0245d5 SHA-256: cc86fa7dc10cacb689768c04c9b4e7d056bc1a48122a37b0e9b3e3ed5558090e
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 0.9969

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/406889139/50-free-spins-coin-master-links-game-hack PDF link annotation
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-do-you-get-free-robux-2021_GM431946152.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_003_off00004823.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4823 29908 bytes
SHA-256: 5a36953abded805219c8c8be23d76e8e5758455d82f50d754ef31952c638a4f2
font_01_sfnt_off00008697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8697 18364 bytes
SHA-256: 5f18526dee368ac18b20cf023ba1ff49340788242d54a3837ea53eed50d07245

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