Malicious PDF — malware analysis report

Static analysis result for SHA-256 35ef48f9bb87b26f…

MALICIOUS

PDF

35.7 KB Created: 2021-07-06 06:51:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e308f8857c71196c00b2410a2c3cac40 SHA-1: f02e3c0c28232aeb1bd5a1d24d7561e4d755c890 SHA-256: 35ef48f9bb87b26fc98bd097fceb4bf197d6664481dc3d4ed5ecb10317cb8808
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a high-confidence heuristic firing for a game hack lure. The primary URL, http://netcdn.tw/app/406889139/app-for-free-spins-on-coin-master-game-hack, is directly linked to a lure for free spins on Coin Master, suggesting a social engineering tactic to drive traffic to a potentially malicious site. No scripts were extracted, but the document's structure and content strongly indicate a phishing or malware distribution attempt.

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/app-for-free-spins-on-coin-master-game-hack PDF link annotation
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-codes-2021-not-expired_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-com-passwords-hack_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/master-hack-coin_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/earn-robux-for-freecom_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-execute-hacks-roblox-scripts_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/what-is-the-best-roblox-hack-youtuber_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/tiktok-free-beer-for-a-year_GM835599320.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-free-followers_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/http-coin-master-hack-club_GM406889139.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_002_off000033b0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33B0 23508 bytes
SHA-256: 38fd9c9d8d8ddb6e48a25056bcd82b0bdad33fba82860e3ed2268724fe00687a
font_01_sfnt_off00006934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6934 18176 bytes
SHA-256: de16d2ceeb0e0a8fd12d9711a772c86d196fa3c7921a2a2092ea65d14319d6bc

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