Malicious PDF — malware analysis report

Static analysis result for SHA-256 c05d4dfd20cae749…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 02:02:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9d07789f2db25d7831c84b02b5ba65be SHA-1: 9060ed11d5831421485d226b2cb81b3900e1f608 SHA-256: c05d4dfd20cae749d18f365f9bbb08142ebb67e9cd3f5db57d9573a098817e86
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 0.9980

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/cheat-code-roblox-pc-game-hack PDF link annotation
    • http://www.my-travel.com.hk/upload/files/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-cheating-hacking_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-hack-robux-code_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-email-and-password-hack_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-studio-hacked_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/robux-hack-v6-5-mythical_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-hack-me-robux_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_off0000312f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312F 22812 bytes
SHA-256: e2304d631ae864a928f066d3f29241ca99ababe169426863068ebad7d876dab4
font_01_sfnt_off000063f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F9 19084 bytes
SHA-256: 4223166be98deacb4c5e4b80ba3f45707d08462ba548cd350780b499801fe974

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