Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ef5a6157d4bcb18…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 06:47:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 12ead58c96dbd1d7e9e64db109ccf335 SHA-1: a0884796904d0d0d5b1939bad2c048c6a1377b07 SHA-256: 7ef5a6157d4bcb182ae5b477c8d792400144b30be008cb6f9a857288a8b91af9
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/free-spin-coin-master-link-today-game-hack PDF link annotation
    • http://pustaka.smpmuh2yk.sch.id/repository/free-robux-by-bananaman-2021-world_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/hack-obc-account-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/pubg-uc-and-rp-generator_GM1330123889.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/what-tiktok-free-views-app_GM835599320.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-comroblox_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/100-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/server-for-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-spin-coin-master-online_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000330d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x330D 22524 bytes
SHA-256: 2304ba6ceba5b089d07684711456d3eb7967a6a6bde49bad4bff2ac079fd5f11
font_01_sfnt_off00006565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6565 18696 bytes
SHA-256: 999ecdd706d19f0427b49ef661b374c0ed01ce3167435dc1c975e4b6691a93c3

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