Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5bde1bec4a94c3a…

MALICIOUS

PDF

34.2 KB Created: 2021-07-09 15:36:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 69c6277ee6c35c3f4cc711f057a2814f SHA-1: 9042d9ffa8c28ad6dbbdb6fd1cb1bd06beeb0fc1 SHA-256: d5bde1bec4a94c3a0ca3f2d00ffcbf0aff26c0706ffe271a907dc3baf69b7a31
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.tw/app/835599320/how-to-get-free-tiktok-followers-no-human-verification-game-hack PDF link annotation
    • https://domc.tw/upload/files/ulgames-resources-roblox-hack_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://domc.tw/upload/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/best-hack-of-roblox_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://domc.tw/upload/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/nicsterv-hacking-people-and-giving-them-robux_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://domc.tw/upload/files/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://domc.tw/upload/files/tiktok-free-like_GM835599320.pdfIn PDF document text
    • https://domc.tw/upload/files/free-obc-codes-roblox-unused_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • https://domc.tw/upload/files/roblox-hack-and-cheats-apk_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://domc.tw/upload/files/best-roblox-games-with-free-beatbox_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/how-to-get-free-roblox-roblox_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_off00002f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F95 22560 bytes
SHA-256: 0b269392b75051d34d2f53060d8ffe417b0c1879ea7389aa3a314519f04b8594
font_01_sfnt_off000061a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A6 18744 bytes
SHA-256: a953571184c07bb3477eea1a3bcf1918e206e2417c943b4d7b829d129f7473a3

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