Malicious PDF — malware analysis report

Static analysis result for SHA-256 45eee4cf0d51cb69…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 20:51:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: dfcb9532436c643f1b3fc24bddf21b5f SHA-1: 8db45298af14a3c0228b6df8c29a7716e46f3f58 SHA-256: 45eee4cf0d51cb6967224a150f2792ccd8d656ff8cbb6b9ce930562e750e8993
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs, with a primary focus on luring users with 'free Robux' or 'game hacks'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. Although no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest the document is designed to redirect users to potentially malicious websites, likely for credential harvesting or further malware delivery.

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/431946152/how-to-get-free-robux-youtube-game-hack PDF link annotation
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/25-roblox-gift-card-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-hack-for-money-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/roblox-phantom-forces-all-free_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/roblox-free-jailbreak-vip-server_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/roblox-script-hack_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
font_00_sfnt_off00003133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3133 22308 bytes
SHA-256: b5405925b11c540b9ecf4f08cf3d83c0ac4d20900356e9d69b9de568a7e1a1c2
font_01_sfnt_off000062b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B8 19144 bytes
SHA-256: 69f15bf39f48ef2819c4fe30de5c54b763846b00a79d58176de4c37c6d2b833d

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