Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fea6550de7a5834…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 12:21:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 98b4817c22d22e0fb64f3b3318f96603 SHA-1: 3e518b0a59e9af58c69fc7d1a1412663ffa141f4 SHA-256: 3fea6550de7a5834bb49fd4c0a8dbfaaba8125fbc2923e4418341302af387e66
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/431946152/free-robux-no-apps-game-hack PDF link annotation
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/robux-gratis_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/how-to-get-free-rainbow-wings-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/how-to-get-the-kitsune-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/coin-master-com_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/how-to-script-roblox-games-hacking_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/roblox-glitch-site-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/roblox-kingadasouth-kingslumber-teleport-cheats_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-easy-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3majalengka.sch.id/__statics/gudangsoal/files/free-robux-websites-without-verification_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_off0000323a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323A 22316 bytes
SHA-256: da59274c6850907284d47498b1fbbd5dcb0e95c8ed6bd8a3776c2dd8439631f5
font_01_sfnt_off0000639d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639D 18892 bytes
SHA-256: 97ed903b38fd4786c0dda88a4c185f49823bb440c2c092ab01e4ff3737a3784b

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