Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc2cd767acca5e3c…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 13:47:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d5f3efe9ec20f3239cca787574c7fc99 SHA-1: 1076733cb4e2f8190e68ba2627d91a5e54039278 SHA-256: cc2cd767acca5e3cb3c92f5bb9d892ba23623ca3d6ff962d3aa0971e717b2c6f
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-35-2-hack-game-hack PDF link annotation
    • http://library.umla.ac.id//repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/abd-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/hilton-hotel-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/login-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/kid-cheats-on-roblox-girlfriend_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-robux-no-survey-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/can-you-download-roblox-on-ps4-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-jailbreak-hack-2021-september_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_off00002fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBC 22760 bytes
SHA-256: c404a8eadc27fd61230735ece40b2b1133433a37dcc7fc8bff4539af933c20b0
font_01_sfnt_off00006286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6286 18436 bytes
SHA-256: fd3cc82f4c1368dfa344b5ae38f998be07616c2019a2f52b65594bfa2782c451

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