Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7e95544148027f…

MALICIOUS

PDF

35.7 KB Created: 2021-06-28 11:08:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6bc2f113a1194c0bf581e620c5f9acbe SHA-1: d5d8c3414e075cfc0866ead8934a8e529e8753c6 SHA-256: 2f7e95544148027f83df0b28efbd3a3580e4b1a76ceb94a81c23f45674429586
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.co/app/431946152/roblox-murderer-mystery-2-gem-cheats-game-hack PDF link annotation
    • https://dentmate.com.tw/image/data/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-quiz-roblox_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-dragon-ball-future-online-script-hack_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-make-cheat-engine-undetectable-by-roblox_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_off00003179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3179 22548 bytes
SHA-256: 858157225fecbf35bb7077ed7bf8e064a03a0e6ecb207171efdc1cc500876b76
font_01_sfnt_off0000640d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640D 19828 bytes
SHA-256: 8a45da47ec21853244b67b46ec230fb764f2c639d4d5a8c0a8add97f862bca60

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