Malicious PDF — malware analysis report

Static analysis result for SHA-256 86881b19c1453c25…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 06:31:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a0c3d06d3cae73768e772bfa408b2eb5 SHA-1: d3a27ef7478ecbdd99e8eea984f1649770878730 SHA-256: 86881b19c1453c25d022bb6767961bf48f8d01d2e0a94531e2c395f935256759
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/479516143/minecraft-client-game-hack PDF link annotation
    • http://www.perpus.stfm.ac.id/repository/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/roblox-phantom-forces-rank-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-send-a-trade-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/roblox-how-to-get-robux-hack-no-scam_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-best-robux-app_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-spins-coin-master-links-blogspot_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
font_00_sfnt_off00003170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3170 22540 bytes
SHA-256: 504ca02a3eec69d88dec49543d7793be0fbb99c7926d43c57ce9033b54f8c606
font_01_sfnt_off000063a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A6 17928 bytes
SHA-256: 57e76fad508f079f9043ac60b045ca945e272a559816a83973d2a5b91d0e9761

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