Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f0fab5cf1b442ab…

MALICIOUS

PDF

43.4 KB Created: 2021-05-15 01:03:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f35bae4751a0464a3747432f75587e26 SHA-1: 9a4e1175a24dbaff3ffa1f8b037c02e22670dffa SHA-256: 8f0fab5cf1b442ab02373f026a7f0a805ca79f3c8fa0b75e0ff453afb1b84fac
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/get-free-spins-on-coin-master-game-hack PDF link annotation
    • http://optiquedelavaunage.com/images/i-robux_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coun-master_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-get-a-free-dominus-in-roblox_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_off00004d07.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D07 25904 bytes
SHA-256: 6bdbfdd7a851e7c3b68284642c00c979937cb7695e477a36c64e917e287a7868
font_01_sfnt_off000088c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88C7 17884 bytes
SHA-256: 200850e3a78b1b50c9881a74b6d24eace04c65468f288c9b2f31b5952499e453

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