Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1747858c0630f6c…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 11:31:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6e9bb1826ec95dc530da5be951cbd1c2 SHA-1: dc30430a4fb83e0df860a98bdd6dc983ef1a2bf7 SHA-256: e1747858c0630f6c788e917ac1e5576d18794f71f1a08dcdda3dfbfb7a84e892
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/431946152/blox-supply-free-robux-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/hack-players-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/open-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-level-7-exploit-free_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000031d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D9 22480 bytes
SHA-256: f3dadebcf5153db4f0115c5bae78898aa8c8d6d4300afcca0c821fbf8dcfa9a4
font_01_sfnt_off000063e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E3 19144 bytes
SHA-256: c941b9cd330ffca6848f3389b5cbc1876b0a4e3bd2ae57faafcb8fbf1ae02fb5

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