Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e217469ed20ebc…

MALICIOUS

PDF

34.2 KB Created: 2021-06-28 04:44:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d1a4c539fce0b7f4b978bbf4bc93b251 SHA-1: ad58d22dd3d81d0bdbe7491ce034de31028cf5bc SHA-256: 87e217469ed20ebce33bb7385a3796f449210fe38819b4f217366b077943731c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating it is a lure for game hacks, specifically targeting Roblox. It embeds a URL that redirects to a site offering a 'roblox-mm2-cheat-engine-game-hack'. The ML classifier also flagged this PDF as malicious. The embedded URLs and the document body suggest a phishing attempt to trick users into downloading potentially malicious content.

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-mm2-cheat-engine-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/roblox-download_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hello-neighbor-free-play-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/is-there-anyway-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/cara-hack-pin-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/get-free-roblox-coins_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-vara-volar-en-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-ha-sido-hackeado-por-jhon-doe_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/wurst-commands_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-admin-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/da-hood-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/can-tiktok-free-view-bot_GM835599320.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-no-verifacation-or-scam-mobile_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hacked-roblox-spray-id_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_off00002eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEF 21880 bytes
SHA-256: e57bd0f60c722626e8f3fb28d76e8279219535d5bfe3477ae58915fea61d66f8
font_01_sfnt_off00005f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F48 19456 bytes
SHA-256: 0d6fc76d3d6289ec3ce07d91b70f36404f001e420d04cb6ba423cfaa48efa8bd

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