Malicious PDF — malware analysis report

Static analysis result for SHA-256 7208026fd5fe6717…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 21:14:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3b33cdc16d0c1a7c39f4502b82c959ae SHA-1: 21da974e0d323952ef31f3165ea4ce543908e3c3 SHA-256: 7208026fd5fe67178443f6778ec3ef46c896a22e35ccfe051efdb8e7bd7c6e53
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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/406889139/coin-master-spin-hack-no-human-verification-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-app-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-stuff-in-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-prop-boat-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-black-wings-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/client-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/wild-and-free-serena-ryder-id-code-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-codes-for-free-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pubg-uc-live_GM1330123889.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/feral-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-gratis-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hack-999999-robux-pastebin_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_off00002f91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F91 22500 bytes
SHA-256: d9b099d4b133b2a099514ecd56ecb58159581e607f3912a069c0ef8a7026420a
font_01_sfnt_off000061de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DE 18712 bytes
SHA-256: 6bd8c5d5e55df37c4823c99c38113fd1d5645e117952cb5bdf76cd2cbfea4fcf

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