Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e13b5c68926bf91…

MALICIOUS

PDF

47.8 KB Created: 2021-06-03 14:24:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c3cb62127cd4d8e7a2001dfbe29e435f SHA-1: 64b24e63fd10cc4245e08845d3967e85b1f9d018 SHA-256: 6e13b5c68926bf91ed37e6ceda35cfb6d6d9d54151b9a56aaf50480a7e36f581
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 0.9769

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 https://netcdn.online/app/431946152/best-roblox-hacks-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-battle-royale-hacks_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51D2 25920 bytes
SHA-256: cb81c8ac439b0cd43c712118138bfd6f700041a38893d8924f9991592c796755
font_01_sfnt_off00008e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E51 2824 bytes
SHA-256: 1d0cb1023eaa225682b8e7a2c8df4e4c96545ba7eedaf3d9844e51183e9ca189
font_02_sfnt_off000097fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97FE 18284 bytes
SHA-256: 94dd9c95e592a650c73b90ca092c2767a8462919e19feedd0474aea1e75e19d3

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