Malicious PDF — malware analysis report

Static analysis result for SHA-256 74cb4ec7451c9f71…

MALICIOUS

PDF

44.1 KB Created: 2021-06-04 05:19:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9bea2136aeaa2644f87f0f260ad77313 SHA-1: e3d0beaa342a774385e57eaf1c06ce5845f711b0 SHA-256: 74cb4ec7451c9f7138b8db69bf1f35da4ddb9ba09c37d786652c7c59880840a1
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 0.9865

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/free-obc-roblox-hack-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/pokemon-go-free-64-bit_GM1094591345.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-giveaway_GM431946152.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_off000051e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51E7 24276 bytes
SHA-256: 53ec0521b335e0aaa857fc4a56925dd1cb8527b5ce0a2ccc9497d777e0851a0f
font_01_sfnt_off000089b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B7 18344 bytes
SHA-256: 832d25d6e6b7e5a621de166d6116995f946f3410484d77af8f32b050696c8a97

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