Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fa05b2f9a8e6fa1…

MALICIOUS

PDF

34.3 KB Created: 2021-06-18 14:37:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d7201f6c2ffbc6b12a2a6b296ed54bba SHA-1: 80fbe0755722ea2f931094d6ef6c736c6b6db49c SHA-256: 8fa05b2f9a8e6fa1601734b5efe1b9918384315c2216874b36a07356dee3a814
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' lure. The document body and embedded URLs reinforce this, pointing to a URL designed to trick users into downloading or accessing malicious content. The ML classifier also strongly flagged this PDF as malicious.

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/kron-hack-for-roblox-game-hack PDF link annotation
    • https://aits.co.id/ckfinder/userfiles/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/can-i-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/robux-hack-not-patch_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/play-roblox-online-for-free-no-download_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/free-roblox-animations_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox-free-login_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/dantdm-robloxminecrafttycoonjailbreakfailyoutube20212021hacked_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/how-to-get-free-spins-and-coins-on-coin-master_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
font_00_sfnt_off00003010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3010 22328 bytes
SHA-256: 93a1f89d19e535cf95a28411d0ea4455207a30719ce46512cd55f9cfcd7e1bc2
font_01_sfnt_off0000618a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618A 18820 bytes
SHA-256: 108a6877cd47611bb32601121d0f1da4599602770fc68b34f288c0d90f25df6e

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