Malicious PDF — malware analysis report

Static analysis result for SHA-256 78688ebe02612553…

MALICIOUS

PDF

33.6 KB Created: 2021-07-01 21:26:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: e8048e312e69f9acb3fdb13878b39152 SHA-1: 333ca028d9d3d39082718bca53ffccc903ff112a SHA-256: 78688ebe026125530dd206e324c4cd68567bc1f27f9b9fac4b29f1eb2fd31d07
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/free-robux-no-verify-2021-game-hack PDF link annotation
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/free-roblox-characters_GM431946152.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/coin-master-today_GM406889139.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • https://kakipalsupekanbaru.com/ckfinder/userfiles/files/minecraft-free-android_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
font_00_sfnt_off00002b2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B2F 22360 bytes
SHA-256: dbfe4e600b0423dfe8bab0e571fe8ca90043d5ace82f259a23d71402ed0ee112
font_01_sfnt_off00005d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1F 19552 bytes
SHA-256: e09a116ef2773d205446325b2d9f1a936106eb792045e06ccc5d6ea31c8b4aca

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