Malicious PDF — malware analysis report

Static analysis result for SHA-256 97561ec0fbfc26e8…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 21:31:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ab371cd604741637758e34f1f16c3031 SHA-1: 581784d35bd491ec4d03a0591c4273d1e66aa1a0 SHA-256: 97561ec0fbfc26e8323cd16aa93e4c31da257825fd3fe6a3cb27affdf083ed17
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/robux-hack-game-hack PDF link annotation
    • http://sttlets.education/senayan/repository/roblox-jailbreak-play-for-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-hack-client-download-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-mad-city-cheat-to-kick-people_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/doge-ahat-free-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/robux-theres-no-way-of-getting-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/only-robux-hack_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-robux-hack-26-may-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/pubg-uc-nepal-price_GM1330123889.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-hack-gui-free-download_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-hack-models-on-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_off00002d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1C 22608 bytes
SHA-256: de546c9e8e810729a4658654958c56dd7b5a2a61279c8c4f14dee9fa5e2b8f6d
font_01_sfnt_off00005fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB1 18724 bytes
SHA-256: e8968fd2130dd0e19937d9907a0efa8c300424940f22b7ca5343d475ddd9ad09

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