Malicious PDF — malware analysis report

Static analysis result for SHA-256 1491c301eec62600…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 10:55:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 962a5c366b19e9d4008c5e1ce80a63b9 SHA-1: 6a7f4b24337996fcaf5d05c26efd219d58695b51 SHA-256: 1491c301eec626005b892cc75032d285fd9652e2a53a165409c9b6b5a598297e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to 'http://netcdn.tw/app/479516143/free-minecraft-skins-game-hack', which is flagged as a lure for game hacks. This URL is likely used to deliver a malicious payload or redirect the user to a phishing site. The ML classifier also strongly indicated maliciousness.

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/479516143/free-minecraft-skins-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/bleu-roblox-mega-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-speed-hack-dll_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-promo-codes-free-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-visual-studio-roblox-exploit-template_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-codes-2021-multiple-people-can-use_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-dop-the-flying-hack-in-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/legit-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-robux-on-console_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_off00003343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3343 22444 bytes
SHA-256: 99e4b85911bfbdce2a9212137f562f9c59b1779a4a80c49b540f38d2181dd018
font_01_sfnt_off000064dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DC 18024 bytes
SHA-256: 4c34e1d22b35053a5a8667e53a0f3af933e1164b6abdc04fe0b1b81d052ba95f

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