Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d35e5ee8502e023…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 01:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1b678f407d99464080cb692c0eedd067 SHA-1: a049b77ca43a882ab91754ce756ea7cd9680b968 SHA-256: 8d35e5ee8502e0235e6b1882e4823a71dfb54dc502e47bea551a583d0a26b787
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 0.9980

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 http://netcdn.tw/app/406889139/coin-master-daily-free-spins-game-hack PDF link annotation
    • http://smpn1sda.sch.id/slims/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-site-v3rmillionnet_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-free-jeff-the-killer-cape_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/suits-shirts-roblox-free_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-bloxburg-hackes-to-get-in_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/cheat-buddy-roblox-esp_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-hack-peoples-account_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-minecraft-alts_GM479516143.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
font_00_sfnt_off0000312c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312C 22236 bytes
SHA-256: db92bf67f65f6db7e15ebf907aacf08ce7735baa2b33e7ed871145599f5e5725
font_01_sfnt_off00006279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6279 18596 bytes
SHA-256: d4477381221bf12ecca5ad3e1f3dc1fc74afabeab8ec0ad27ac375f28b3d2402

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