Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb10d9d445a4594d…

MALICIOUS

PDF

55.5 KB Created: 2021-05-14 22:21:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8a0b0531c30fba694b0648f22f05eb15 SHA-1: a621ebb9f8a7f60550beb1bee9cd94980a85930d SHA-256: bb10d9d445a4594d602a9a7bb7dc10f7127083165d7a15400511b030a124cc47
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 0.8407

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 https://netcdn.xyz/app/406889139/coin-master-lucky-patcher-hack-game-hack PDF link annotation
    • https://7gking.tw/upload/files/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://7gking.tw/upload/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://7gking.tw/upload/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b84.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B84 26700 bytes
SHA-256: 416cee326241c033d9c969aaddfd18d52c786f4827e607a56b1f1344a864ab49
font_01_sfnt_off000089fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FC 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off000094c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C7 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7ED 18356 bytes
SHA-256: 48d2456a70e0b436a66ea7754c0c12eb0fff45cce4d0a828759cadba1e6f893b
font_04_sfnt_off0000ca0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA0E 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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