Malicious PDF — malware analysis report

Static analysis result for SHA-256 c63ffc710558fcdb…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 16:02:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 299f4fbc125d56b7dd1cea60c696216f SHA-1: ab1e97421fb8c66e91026687baaa45f399f726a5 SHA-256: c63ffc710558fcdb373e1d3e58dc10b7cab6081f82229e45b0ebf6c677cd6b60
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.tw/app/431946152/roblox-free-executor-game-hack PDF link annotation
    • https://library.stikeswnpalu.ac.id/repository/best-jailbreak-hacks-for-roblox-ooooof_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hacking-denisdaily-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/static-moonactive_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-builders-club-2021-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-hack-the-games-of-roblox-to-have-people_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/play-roblox-com-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/pointsprizes-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/www-rubux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/nomend-diamond-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-free-tycoon_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_off00002f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F88 22096 bytes
SHA-256: 4a288650bb3cc17e594cb9e60c2859853d421f63d52bd3c1520f25d96bfad654
font_01_sfnt_off0000607f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607F 18896 bytes
SHA-256: 641cf75bbecca96e2df31d1e85298347cd1860f5929f6e14b17a62f39c4df72c

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