Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1ddf9818a88751…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 00:49:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2c317fd52ba68849956fb12dac76da13 SHA-1: 6fc0d0fcf44593d9afcf531bc807cd8357f0dc68 SHA-256: 7b1ddf9818a887514ab67b4ab882820280758932fc3963e26bce12efd376625a
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/coin-master-unlimited-spin-link-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/alvinblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/pastebin-robux-hack-911_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-jailbreak-money-hack-deutsch_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/i-need-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/comment-hacker-roblox-avec-une-application_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-infinite-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-official-page_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-paladins-exploits_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/www-roblox-com-free-games-at-roblox-com_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-windows-10-edition-free-with-java_GM479516143.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
font_00_sfnt_off00002f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F96 22896 bytes
SHA-256: 506620b8aa6f340c22ca6ce60b9e8cedede0fc1eeae1d17c816acdd0cd66a3c2
font_01_sfnt_off000062dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DC 18876 bytes
SHA-256: 9d60d37e067a6d4c442ff84830afebfbfe0c10ff7bd2d1a6bfdb0c0aec4c2d8b

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