Malicious PDF — malware analysis report

Static analysis result for SHA-256 8094ec97b5bf490b…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 12:21:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9fa71a7127330e22d133d75f75118fc0 SHA-1: c3fc6667b726ffa27d0ac3f257b49831a08190d7 SHA-256: 8094ec97b5bf490b5799a6ba0e0430f7a4088f95ac54f2c28c2c2a4f2e40f186
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and lures related to game hacks and free currency, specifically targeting popular games like Roblox and Coin Master. The primary malicious URL identified is http://netcdn.tw/app/431946152/robux-gift-card-free-game-hack, which likely serves as a redirector to a malicious site or download. The document's structure and content strongly suggest a social engineering tactic to trick users into clicking these links, aligning with a phishing or malware distribution scheme.

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/431946152/robux-gift-card-free-game-hack PDF link annotation
    • http://perpus.ftunismabekasi.ac.id/repository/i-will-hack-you-roblox-audio_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-hack-pets-simulator_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-roblox-card-pin-code_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-do-you-hack-an-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/flamegg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-com-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-free-rbx-2021-june-hack-no-generator_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-cheat-menu-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/hacks-bacon-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-robux-without-installing-anything_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/hero-havoc-roblox-hack_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_off000031a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A5 21704 bytes
SHA-256: 13e5800566b12479f76efb1faecf6234be0a20b8bfcac8d26e58d492abf2a66a
font_01_sfnt_off0000615b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615B 19112 bytes
SHA-256: 2ea37c508b0c91132d1ae13c4ee486db57383bf0a0a064ac7651587d02fc5b1e

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