Malicious PDF — malware analysis report

Static analysis result for SHA-256 bce4df1671ecc224…

MALICIOUS

PDF

35.3 KB Created: 2021-06-20 12:06:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f3a7ab3c80bd6ed0ccc34784515fc6cb SHA-1: ccd774c91ccdc00a05dab0af301f85a02f0f86bc SHA-256: bce4df1671ecc224a3bbd0859f2b49bf9581ed8df4e0b4669ef0da357052181b
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/how-to-get-free-robux-online-no-survey-game-hack PDF link annotation
    • https://repository.stikesindramayu.ac.id/repository/robux-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/cheat-engine-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/100-working-robux-hack_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/hacked-roblox-format_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-robux-without-spending-real-money_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-free-pants-and-shirt_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/floating-hack-in-roblox-star-wars-first-order_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-hack-peoples-roblox-accounts_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_off00003208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3208 22268 bytes
SHA-256: 6c546f61ed29bd982cf3f03f8fa0c67f349861631404b2d807ac03aa4f10c240
font_01_sfnt_off0000637e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637E 19472 bytes
SHA-256: ee50457eba13fbecf9427c68e69b7022a43f4caeab62dd04ab5eb977e41714a2

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