Malicious PDF — malware analysis report

Static analysis result for SHA-256 78eb8c38d2b09665…

MALICIOUS

PDF

28.0 KB Created: 2021-05-10 19:40:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f72cee5989ded9efa40885cf1256ea96 SHA-1: 677e436ff53c7f6ccb7f915f89f8b1c54e3ff621 SHA-256: 78eb8c38d2b096657cec87b2f3cfe43d434b2a18feef45881e6cbe5ad25b50fc
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 0.9747

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.xyz/app/431946152/free-roblox-generator-for-roblox-game-hack PDF link annotation
    • http://www.lacarla.dk/images/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/roblox-website-robux_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://www.lacarla.dk/images/how-to-get-free-robux-without-verifying-2021_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_off000020a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20A9 19744 bytes
SHA-256: 3b106b10ca367ca3a604b5d363daced8085ed0d05b4bf845820ae4a3303b73e2
font_01_sfnt_off00004a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A9A 18280 bytes
SHA-256: a933d21998376b1e1789d4c480c6983ef3f135197d1bc74c37b8b8f8713ff5e6