Malicious PDF — malware analysis report

Static analysis result for SHA-256 a53b6adcc04e2722…

MALICIOUS

PDF

35.0 KB Created: 2021-07-01 08:48:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f4e81ac53be3740add01c75a4c62bf69 SHA-1: 1e81146ceb82b6e7e91f43c610477b4bc59f54ac SHA-256: a53b6adcc04e2722fbf51b87a2bc206163aad80de9fe0516775d4da8ec7daa6d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that strongly suggest a lure for game-related cheats or hacks. The primary link, http://netcdn.co/app/431946152/hack-for-trasure-hunt-simulator-roblox-game-hack, is identified as a high-risk redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a social engineering tactic to drive users to potentially malicious content.

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.co/app/431946152/hack-for-trasure-hunt-simulator-roblox-game-hack PDF link annotation
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-promotion-link_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-high-school-game_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-com-hack-account_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-tiktok-views_GM835599320.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-ipad_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/hacker-escape-prison-roblox_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-mak20217_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_off0000311c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311C 22324 bytes
SHA-256: a535f9cdf212c4df89b8f79b151e604ae3a7b07009bd9a8f07d93f417a2e34a0
font_01_sfnt_off000062d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D8 19444 bytes
SHA-256: 4eb8ee64bdfe5ce4c34bb1892c74c6ef00c500ee307340ba81a7967f5f41ddb2

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