Malicious PDF — malware analysis report

Static analysis result for SHA-256 508012d88faf8ba6…

MALICIOUS

PDF

35.6 KB Created: 2021-07-09 03:03:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 207b17396c7ba7e89c18b9c0103b62af SHA-1: c5a5c2cac9f3a4ad3bbc762795a61d9c4a8d62b5 SHA-256: 508012d88faf8ba6cc099e336b7df1d5a54cbb139d90f3bf120038d4cac7e8b6
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/free-coins-coin-master-blog-game-hack PDF link annotation
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-game-on-computer_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/spin-and-coin_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-attack-doge-roblox_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning11.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-earn-robux-fast_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_off00003514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3514 22940 bytes
SHA-256: e8a76149ebecbfb7b5e724f5aa05f4456963b3380a8ee1b2eb346eb1b42eb2a6
font_01_sfnt_off0000689b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689B 18288 bytes
SHA-256: 4d8a9a5f845e6a4543ff8d893a9e279bb8bc764ff82ea70c3d9fb3020af74c46

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