Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dea524e45b5dae3…

MALICIOUS

PDF

44.4 KB Created: 2021-05-12 07:08:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d770f085bf861123dde42466135847d0 SHA-1: 84aa90fe8c5ac336cb144aba07c1efa08756c29e SHA-256: 7dea524e45b5dae3e829a36f610197552aad258ee0ac86931e133c6628ba1577
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 https://netcdn.xyz/app/406889139/coin-master-hack-apk-download-game-hack PDF link annotation
    • http://psb.sd-alazhar29.sch.id/repository/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/robux-adder_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-mod-updater_GM479516143.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_003_off00004ae8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AE8 27848 bytes
SHA-256: e572057e85f118118903a5ca70f417b6b6766d98d8fe9db3b932689220996423
font_01_sfnt_off00008aba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABA 18472 bytes
SHA-256: b10e38fa64fdc7a07425ec3e58abfd5c70461e5a71d6d287eed64148ae58b3d9

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