Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6fadc8fa973d507…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 18:41:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4ddc72d6bbaaa918087aa72c7357e1f9 SHA-1: 83b0570d50bae6fe2f7184eb37e977006d816605 SHA-256: b6fadc8fa973d507386de3da86a115481456e39c8ecad5e2524c741c3ddccbb3
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/479516143/minecraft-pe-mod-menu-game-hack PDF link annotation
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/roblox-adopt-me-money-hack-script-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.elearning.tawakkal.sch.id/__statics/gudangsoal/files/hack-para-roblox-2021-julio_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/230-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • https://www.elearning.tawakkal.sch.id/__statics/gudangsoal/files/how-to-hack-money-on-muder-mystery-2-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/www-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.tawakkal.sch.id/__statics/gudangsoal/files/roblox-free-clothes-catalog_GM431946152.pdfIn PDF document text
    • https://www.elearning.tawakkal.sch.id/__statics/gudangsoal/files/roblox-games-that-give-you-free-items_GM431946152.pdfIn PDF document text
    • https://www.elearning.tawakkal.sch.id/__statics/gudangsoal/files/hack-script-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/roblox-com-www_GM431946152.pdfIn PDF document text
    • https://www.elearning.tawakkal.sch.id/__statics/gudangsoal/files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.tawakkal.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/coin-master-hack-version_GM406889139.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_off00003425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3425 22140 bytes
SHA-256: 330b33766ca2166b8828a7d5f64016fc1e9254a8230529ddac979ae86d7948b0
font_01_sfnt_off0000647f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647F 18468 bytes
SHA-256: 270bd677220d8e236dad59b99a180391c2ade1823ff393683d940e1d5a26ecaa

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