Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bcfad6a6ce3056…

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 20:27:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ee0a0f8e894bfd73a52df577b25e4a11 SHA-1: 7d16a3b55e5eb4cf08f4172e89eacac16a0abbeb SHA-256: 27bcfad6a6ce30560c9efbb98df0fef1319dd5d5b96630501cec773efc58ee50
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game cheats and hacks, specifically for Coin Master and Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful sites. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or social engineering attack aimed at driving traffic to malicious domains.

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/cheats-for-coin-master-game-hack PDF link annotation
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-marshmellow-head-on-roblox_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-change-your-username-on-roblox-for-free-mobile_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spins-link-download_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/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://kpu-denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-teleport-in-roblox-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_off000033d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33D7 22612 bytes
SHA-256: 7e04de0050bc4b2888d23a7dd7a72a8400223a8939c6ee5834dcf92ace0afd15
font_01_sfnt_off0000667a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667A 18164 bytes
SHA-256: c315ccf9a79b36be1a03c3aee76827ab51131b40fc24ac36c1cd3f6d313de72a

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