Malicious PDF — malware analysis report

Static analysis result for SHA-256 03689f972e2629b5…

MALICIOUS

PDF

44.3 KB Created: 2021-06-04 04:35:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 670db8c54174ce94f966200f5312bfb9 SHA-1: 3c717bdb1da0135302bcf8a68adfca3578344eeb SHA-256: 03689f972e2629b5fea1732532f77009fa8bcd1d008f7ed45f8309a384472761
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically pointing to 'https://netcdn.online/app/406889139/hack-coin-master-without-verification-game-hack'. The document body and numerous extracted URLs reinforce this lure, suggesting the primary goal is to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a social engineering attack, likely T1566.001 (Spearphishing Attachment) as the initial access vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/hack-coin-master-without-verification-game-hack PDF link annotation
    • http://suaedy-library.net/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/114-hacks_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/pubg-uc-600_GM1330123889.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-coin-master-gold-cards_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_off0000504c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x504C 25112 bytes
SHA-256: 9aaeafc63757bfb272f4b798ce7da0798b146d78345e3c99230df38df306e025
font_01_sfnt_off00008a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4D 18356 bytes
SHA-256: aefaa71949a7bdb31c5263769784b91b60fa36dc046093ce5bdaf3e1e31da4c1

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