Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a356a54931b5e3…

MALICIOUS

PDF

44.9 KB Created: 2021-06-11 00:33:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c4ab9a40980c453bd9003d6c8c9301b8 SHA-1: b13d0e68ea138ec6158d14a69d869d968990c1e4 SHA-256: e2a356a54931b5e3b3dde7fdafdb06722845752b62dda4a7d009278b65669df4
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.tw/app/431946152/roblox-cheat-engine-cheat-table-game-hack PDF link annotation
    • https://pustaka.widyakartika.ac.id/repository/tiktok-free-dance_GM835599320.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-para-robux-gratis_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/which-pubg-uc-is-best_GM1330123889.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-dragon-ball-z-skin-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-coin-master-spins-for-today_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_off000052b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52B8 24712 bytes
SHA-256: 87204f301b5cbb9201b5352c24239828d5b07ca369607a7ada157a272618f129
font_01_sfnt_off00008b7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7D 18688 bytes
SHA-256: 5b3d39794ccbf446989c3dd0334c462456b2ec68b4edc68e009b2331838e256a

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