Malicious PDF — malware analysis report

Static analysis result for SHA-256 415c59e19ff4fd75…

MALICIOUS

PDF

35.8 KB Created: 2021-07-06 06:20:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0683e5df61082b42c46c66a04d3eeeb4 SHA-1: 42152689ea394614c723a13977f917615f186d45 SHA-256: 415c59e19ff4fd75b884e2032a0ab22b47dbc6ed2fb0020f624d4936551f195d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links and references to game hacks and free in-game currency, such as 'how-to-hack-coin-master-facebook-game-hack'. The presence of a direct IP address link and the ML classifier flagging it as malicious strongly suggest a malicious intent. The document likely serves as a lure to direct users to potentially harmful websites or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/how-to-hack-coin-master-facebook-game-hack PDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-iphone-free_GM479516143.pdfPDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-use-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-hack-roblox-aimbot_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/robux-free-tips-apk_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/pubg-uc-code-redeem_GM1330123889.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-exploit-on-roblox-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-elemental-battlegrounds-speed-hack_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-robux-for-free-2021-for-kids_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-working-roblox-cards_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-roblox-shirt-girl_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/glitchtale-battle-of-souls-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
stream_002_off000034b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34B9 23220 bytes
SHA-256: bc9b8d58036206708258b3d7a5101d315992257cb0b85a0c2892a9b987e8c401
font_01_sfnt_off000068e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E1 18492 bytes
SHA-256: 01e85d07497bb32c3ce1845552bcf0a86649ff649238031b66b218300dbbc8ca

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