Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0449944b12c51d…

MALICIOUS

PDF

48.9 KB Created: 2021-05-12 10:00:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 62e338ca54fa40e8eeac609f9cf70f71 SHA-1: 102ea85daca03e7f88e3cf5d29dc768bd2598041 SHA-256: 7e0449944b12c51d9d981bc74f75aafbea981602a5b0a7f19e6cf4214b956e74
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9228

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/431946152/how-to-hack-any-roblox-account-game-hack PDF link annotation
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/earn-roblox_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bf7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BF7 29320 bytes
SHA-256: ef12d78c9e01cd0e2b3779eec00bd6a96dc2c33508c13c6499d29f9c1782ca46
font_01_sfnt_off00008e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E44 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009b55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B55 18772 bytes
SHA-256: d5ac01ba848f85c7af00746e0b4ab9643e0d1d2f53353368de6e0e250a854553

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