Malicious PDF — malware analysis report

Static analysis result for SHA-256 3893720ea03d440b…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 16:03:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6e6f9c610e69270e4bb0817069ee8195 SHA-1: 10e352981fd99247ffc0c11977c1d9af90115f22 SHA-256: 3893720ea03d440b3bc3a052d88497fcad654efb663df153bb7a3468f2571395
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-dragon-ball-future-online-script-hack-game-hack PDF link annotation
    • https://dentmate.com.tw/image/data/files/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-apk-mod_GM406889139.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/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-free-downlow_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-free-money-hack_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/como-descargar-hack-para-roblox-de-robux_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/rbx-robux_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/today-free-spin-coin-master_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_off0000307f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307F 22172 bytes
SHA-256: 50c3671cdb78d57a9458cd9e8f1f9cea7a2bbe3e86ce90666c16bed753a2f25b
font_01_sfnt_off000061de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DE 19528 bytes
SHA-256: 4a057134248ad65045f62881121027aa7e83ce29808786d44419f910d68f295b

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