Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcab893a22e9efcc…

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 13:23:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0b41b4de3b6fee29a4f6bc90726347f3 SHA-1: ac74a199dbf10fd833fdc693deb510c38858deeb SHA-256: bcab893a22e9efcc16ac321ded950f72988edfbb24ddd6c57a52ddedb824d152
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/roblox-dungeon-quest-no-skill-coulddown-script-hack-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hacker-net-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/get-me-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-do-you-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/open-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/youtube-nicsterv-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/v3rmillion-robux-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-plates-of-fate-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-free-robux-2021_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_off00002eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEA 22128 bytes
SHA-256: 3488cac4ec828166a1a2f8a57a4ffbcf2992cb6f653fcde32fea657deee45b45
font_01_sfnt_off00005ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFE 19860 bytes
SHA-256: 4bd08136b3913b6856166f059b99023cdf11a9e438f1e83e4b0eebd7195e7da0

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