Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b9d58a2cfcbb78d…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 06:22:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0098b413d8fff99e2b9ca35cd588c58d SHA-1: 05d1ecb48cf0ea028a9de6984c8bee63792626c2 SHA-256: 6b9d58a2cfcbb78d711ee6b767951a320a6e8e8f879bf70fde288a6f649e6263
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 0.9865

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/coin-master-free-spins-that-really-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-ban_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-mster-free_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-game-download_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_off0000505f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x505F 24184 bytes
SHA-256: f52fdf3404e16bb55d86a553664f954cb2d950cb3ace1c0e12268b16ee4c1d09
font_01_sfnt_off0000872f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x872F 18308 bytes
SHA-256: 9280bacae3ad0da4146be41547e1663b6e8aa07aae351ce46264d323328a6377

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