Malicious PDF — malware analysis report

Static analysis result for SHA-256 704f56f1838af338…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 00:47:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7fce6a0d8b612d2ab4723552b2a66b12 SHA-1: 725cfac6df7043fa1a7b42b36b2cacafdb1e5ce9 SHA-256: 704f56f1838af3381def8056f106fb717607caa1f96f9ecc38d050b01bb27a87
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/431946152/www-rubux-game-hack PDF link annotation
    • http://library.yamasi.ac.id//repository/roblox-generator_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-gift-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-link-app_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-old-roblox-account-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-welcome-to-farmtown-beta-hacks_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-robux-into-roblox-account_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_off00002f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F81 22104 bytes
SHA-256: 16269b5d8e3572af1717dc68f3cddc065e2473f14d0c29c63bed73ace19ab628
font_01_sfnt_off00006055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6055 18772 bytes
SHA-256: 35d640e4f5f6b0e7d29797825f5b03f909a069630f9706be3a19f635f6f41ed8

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