Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f768ffcd01f70e0…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 14:08:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 670c6b07fb6febfa6f700d4aa5c73638 SHA-1: abd710856932a5815b7ac5566e69e558f839e59c SHA-256: 3f768ffcd01f70e0a6aea10c424ef05707971c7ef38db9c08dbd91c7d83ec14b
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-daily-game-hack PDF link annotation
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/are-decals-free-to-upload-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/blox-fun-info_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/free-robux-games-obby_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/checkmein-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/how-to-claim-free-robux-games-real_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/cheat-engine-change-server-value-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/panel-de-hacks-de-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/roblox-install-free_GM431946152.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://elearning.masnurulhidayahcibadak.sch.id/__statics/gudangsoal/files/free-minecraft-server-hosting-24-7_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_off000033fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FC 22704 bytes
SHA-256: 66bc3cd697064433369d8801534b9b6c8029a2d64c0252fd292d093c10cd107d
font_01_sfnt_off000066f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F4 18420 bytes
SHA-256: cd14d3499d0896603ac511e8ded95f3ea65909835c91c73eca58e3f383c3161c

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