Malicious PDF — malware analysis report

Static analysis result for SHA-256 10a3176023fcc557…

MALICIOUS

PDF

43.2 KB Created: 2021-06-03 13:16:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 34641152b3badd17cd9fef2315733ae4 SHA-1: 837f1f4a66a7fbd233d84f28950a9fd2e63f224a SHA-256: 10a3176023fcc5576b213fe962380f4d8e92f12e9257c040bff0cb60656f5f8a
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 0.9865

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/se-puede-hackear-coin-master-game-hack PDF link annotation
    • https://lib.insan-unggul.ac.id/repository/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-tiktok-views_GM835599320.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-classic-free_GM479516143.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
stream_004_off00004edc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EDC 24384 bytes
SHA-256: 9c5a2089c3a5f1c0cb32c6682da0911411127ebb02ab25f74232d1e9a031b9f5
font_01_sfnt_off000086a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A4 18184 bytes
SHA-256: 52a96ef7ba39a26893895b90e9b4f2c5af116e165a9a1008a5be9b99a8a362cf

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