Malicious PDF — malware analysis report

Static analysis result for SHA-256 e69f0b050e1897fc…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 10:35:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e22fc44309a8827cab08f9cfb472a161 SHA-1: 80ed0739fa4eb43cd5a7c2b0a5d6e77c8607a589 SHA-256: e69f0b050e1897fc51c766917b16fad13f2caf5ee4b8290cae21d3c95dc0a95a
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 0.9797

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.online/app/406889139/get-free-lives-on-coin-master-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005097.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5097 24520 bytes
SHA-256: 65f07561350456189a0bd83b7ed17e1ddf347e19176dbbe842a6c225979dc9a7
font_01_sfnt_off0000881f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881F 3124 bytes
SHA-256: a0e4a5f378f23ac829e40ef1a0638115ffab18b17acd7561ed9b637601232063
font_02_sfnt_off00009302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9302 17824 bytes
SHA-256: 98e8fff89c022a83b4f395b71729b3265c44f0a4288b6eee3ecf04cc1aa00118

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