Malicious PDF — malware analysis report

Static analysis result for SHA-256 596f6dd90d4dfbdc…

MALICIOUS

PDF

35.1 KB Created: 2021-06-20 08:45:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ab779c6dba3940d8817b3661e90a7354 SHA-1: 34215a4ac2a3035930ddc64293be9cfae3c79157 SHA-256: 596f6dd90d4dfbdc8dbd63755bbf8579a37418a7550e13a647418bba40d050b2
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.co/app/431946152/hacking-apps-for-roblox-game-hack PDF link annotation
    • http://sttlets.education/senayan/repository/get-free-robux-roblox-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-no-survey-and-human-verification_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/ads-for-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-support-hacked-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_off00003298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3298 22216 bytes
SHA-256: 1b092936825e0174fdf9f186ba85fcf30aba870b42eb643c43ba797221b137c5
font_01_sfnt_off0000640d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640D 19116 bytes
SHA-256: 3bcd7b2d89d8aecd7d130b41463c553295403bd5e8c490fc64bd1910461431f2

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