Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe858bc9d8b315c…

MALICIOUS

PDF

34.5 KB Created: 2021-06-20 12:15:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7d178c289ce723665896f7bacfc3250f SHA-1: f17d85421e7079e4725e52ece1ac21c397b96e0d SHA-256: ffe858bc9d8b315cb7a7f43f7fffa951048d7b5cdaaebbcf5efc9c56244107cd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free currency, directing users to a suspicious URL. Heuristics indicate this is a common redirection tactic for malicious content. The ML classifier also flagged the PDF as malicious with high confidence. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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/hack-para-tener-robux-enderobux117-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-pins-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/is-tiktok-free-on-voxi_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-shirts-roblox-that-i-can-copy_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-wings_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-dungeon-quest-hack-free-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-10k-robux-by-redeem-code-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-money-cheat-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-com-hack-robux_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_off00002f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F31 22376 bytes
SHA-256: bcbb570b6556e9ddf4ad00cda7459b9d9334d1e9d000cc1068342199bfd0dbd6
font_01_sfnt_off00006110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6110 19212 bytes
SHA-256: b80b9ad649ed72f097b0b5c62319d0e5a0c4f0a8d515a92569191de91cf36632

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