Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a4eaee957a8efd7…

MALICIOUS

PDF

43.3 KB Created: 2021-06-13 22:40:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0cfc49e73d45dbfc9d8c5c7dde85ef20 SHA-1: db98a3083b9813a7d411cdb10d6b02b0b61f4761 SHA-256: 9a4eaee957a8efd7fb0fc0230fe53cebbec231b44c33c7826ec07dd44369720a
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 0.9969

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/god-mode-roblox-hack-2021-game-hack PDF link annotation
    • http://akbidprimahusada.ac.id/elibrary//repository/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/roblox-free-admin-game_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/get-robux-com_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-texting-simulator-hack_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/all-free-stuff-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/get-unlimited-robux-hack_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-vip-games-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
stream_003_off00004a49.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A49 25260 bytes
SHA-256: 4ea382fbe5404eb4454cff0de2a681531ac4815f26b47860174f5c653de17d2a
font_01_sfnt_off000084a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A6 18952 bytes
SHA-256: a77818c5c7064688279cba97bfec1a5abf7d051c348fd55a0a10756c27066d5a

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