Malicious PDF — malware analysis report

Static analysis result for SHA-256 839359c3c7a4b066…

MALICIOUS

PDF

47.4 KB Created: 2021-05-12 23:22:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f20bee1df85eafb59a4dc47f43bdebae SHA-1: aeead8f84d0787732d26f97a45884adc1b7cf349 SHA-256: 839359c3c7a4b0662c4d65e2a330a64224bec0f7339d2a4bcee3e52d7c501e7a
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 0.9013

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/431946152/how-to-change-your-name-in-roblox-for-free-game-hack PDF link annotation
    • https://www.xenonsvjetla.com/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/mcpe_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/robux-online_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/best-site-for-free-coin-master_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_003_off0000495a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495A 26548 bytes
SHA-256: 774f9485760a645a79245a0785977da0eced850fc7aba9c2a5465872eefd3e7c
font_01_sfnt_off000086ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86AE 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000093bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93BF 19356 bytes
SHA-256: f5fa8051516efdb430215c32221800eb8c82dc03f6476ac338efe693dcbf881c

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