Malicious PDF — malware analysis report

Static analysis result for SHA-256 21f12d9ebb4134ed…

MALICIOUS

PDF

44.4 KB Created: 2021-06-04 00:42:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d3f874ccb27621720841388b62b1e8f3 SHA-1: 7bf971c944da2ef4eea94ec1aed145d25569e459 SHA-256: 21f12d9ebb4134ed8911d00817234d488125ac6a9b548f908e2c14eb2dc5fa41
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 0.9865

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-spins-hack-apk-download-game-hack PDF link annotation
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/claimrbx-free-robux_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_004_off00004fe3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FE3 26304 bytes
SHA-256: 88cc04442c15a3684f6b6fd3c1c4b8ad0e8bb23466d480c455952d217b204a0b
font_01_sfnt_off000089fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FA 18636 bytes
SHA-256: 5481d0302ec3c0ba5c2d586dcd50dd6b5df695462c9cc4a17d5c66f6ba577068

Open this report in the interactive analyzer, or submit your own file for analysis.