Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea6d06a7777afa9…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 05:00:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c08f1232bffc804a0c5255600829563c SHA-1: 685d7c241b1d01d2d0962369c9c5d162fa2ee0a7 SHA-256: 4ea6d06a7777afa9e57416fededd97744959cf8e60f683eeeefa7522d706ccde
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/406889139/static-moonactive-net-free-spins-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/pokemon-go-free-coins-no-human-verification_GM1094591345.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-synapse-x-free-download_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/pokemon-go-free-remote-raid-pass-2021_GM1094591345.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-download_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-roblox-gift-cards-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/real-working-coin-master-hack_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_002_off000031a1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31A1 23400 bytes
SHA-256: e3aed3974b66b518c7f2f63bb21e941a71925b256cb14da772c6849943281b75
font_01_sfnt_off0000665c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665C 18288 bytes
SHA-256: f422a02d81899bade32c4e0036a2fd6befc986b55d68913fba82803fa281f610

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