Malicious PDF — malware analysis report

Static analysis result for SHA-256 930a539c19dda3db…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 08:29:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 909faf6f5f09fdd08ec012bdbb90a9d7 SHA-1: b4d73ce8a92253961cbd6d010f2bbca6fb055384 SHA-256: 930a539c19dda3dbe0a9db1093808c3d13ab32ca203a30e543ae86d8ac240777
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and 'game hacks', directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and multiple heuristics indicate it's designed to redirect users to potentially harmful content. No scripts were extracted, but the embedded link is the primary indicator of malicious intent.

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/431946152/roblox-group-free-robux-game-hack PDF link annotation
    • http://rightlead.com.tw/image/data/files/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-today_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/wurst-download_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/best-free-minecraft-servers_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
stream_004_off00005158.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5158 26100 bytes
SHA-256: b4c22c50596eb4c641c043fc553e80e8b854ab7863f2f4625d5d2a0f3899b11b
font_01_sfnt_off00008d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D28 18264 bytes
SHA-256: b2792b9995997ff68e5dfa2acea2bbc639d657441038e216f117c3302624ca62

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