Malicious PDF — malware analysis report

Static analysis result for SHA-256 59cecd95408b2041…

MALICIOUS

PDF

47.4 KB Created: 2021-06-09 16:55:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f25ccc529ff889fe920b7d739d77eae6 SHA-1: 8102a604664a9b0b13d6882916a5142441d936ce SHA-256: 59cecd95408b20412f93431b965d0d4e7e1aa67a09cd8967e07fd0160dfdb793
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.tw/app/431946152/roblox-how-to-get-free-robux-without-verification-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/to-cash-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/injet-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/can-pokemon-go-free-incense_GM1094591345.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/pubg-uc-via-login_GM1330123889.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robuxreward-net-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-name-tag-hacks_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_off000051e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51E5 24356 bytes
SHA-256: e7fe3b68e37a4e6a2ac2010fa34b0ae51a21a7bf5fffa908b0928894e0b6a74e
font_01_sfnt_off000089ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89ED 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off000093ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93EA 19200 bytes
SHA-256: b98b3371840d658c881e1f78743c25a3df3a8beb3a8ae8dae2bfacfafbb5c321

Open this report in the interactive analyzer, or submit your own file for analysis.