Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf8f384b2621a61…

MALICIOUS

PDF

45.6 KB Created: 2021-06-09 03:39:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 06526af5874c18c1e934a040ee873ff3 SHA-1: 133d8b0bad2bcbd62d804be9f1e225cac715e142 SHA-256: faf8f384b2621a6150a3848c8c19b43201a051bb8a78987f20e91a6a97bd5dda
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 0.9864

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/free-5-robux-game-hack PDF link annotation
    • http://elibrary.perludem.org/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-tycoon-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-today_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-no-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/swagbucks-for-free-roblox-account_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-link-today_GM406889139.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
stream_004_off000050c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C5 27880 bytes
SHA-256: 84c6595ddeff153430c1e99b5089225115fb022d66f3f53053f453b958481a83
font_01_sfnt_off0000903c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x903C 18148 bytes
SHA-256: 65aee44b57dfba87098b358421bb384244d08d55c6e9f6bcabc2e50f64562c8e

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