Malicious PDF — malware analysis report

Static analysis result for SHA-256 57eed32e7fabf6e2…

MALICIOUS

PDF

46.6 KB Created: 2021-06-03 05:11:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f629f87b01b728becc91638aa312f05d SHA-1: 9389e249ad57e46140e799d073f5d7994a85ebed SHA-256: 57eed32e7fabf6e249900b4ee30d186ca69ddbf0a6d154aeba911971d4eea76b
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 0.9748

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/406889139/how-to-get-free-spins-in-coin-master-game-hack PDF link annotation
    • http://elibrary.perludem.org//repository/body-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spin-links-december-30-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-2021-no-human-verification_GM431946152.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_off00005064.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5064 24920 bytes
SHA-256: b49e1013d05aa3de12c3404e5efcb8236c64bc8568141d6e6a311d0e47cab388
font_01_sfnt_off000089fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FC 2920 bytes
SHA-256: 64c53edae7920bc04119553d13e7f88c7ab8c9d6abd0f5e62be35afdb33f76ff
font_02_sfnt_off00009418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9418 18052 bytes
SHA-256: 52b27d49d658c5dd219fe1685a79a71966a386845fdc62a41335e5719e4d5001

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