Malicious PDF — malware analysis report

Static analysis result for SHA-256 18afa2a6412c940b…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 07:14:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b2493d3b103b9df329a4b5ac6df9af0e SHA-1: 0c289b12da0ef898fbfc8faf45b3b72c1938e16d SHA-256: 18afa2a6412c940b2b60cfc6b9965a24edb888ba736d02d74a1e9ae5a1cd7354
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free currency, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the presence of multiple embedded URLs further supports a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded links suggest it is designed to lead the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/how-to-give-robux-on-mobile-game-hack PDF link annotation
    • http://lib.mbp.ac.id/repository/get-free-robux-on-a-server-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/pubg-uc-mod-2021_GM1330123889.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/minecraft-bedrock-free-with-java_GM479516143.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
font_00_sfnt_off00004f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F6A 25496 bytes
SHA-256: 9ee6d41f1dd78af88310ee34e8ef62937c32401f7ec7232241028a66dbc0ffe1
font_01_sfnt_off00008adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADC 18516 bytes
SHA-256: 5a1eb6b579ee737c288eebd995e2dbc62fabc4e67162e602dacd7340a894a344

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