Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b90cc178cadabec…

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 12:25:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2ed1edf6852da23ca4ceeafa1646c81b SHA-1: defafca8befa2b4c79d3de693ac4f2be7120582c SHA-256: 6b90cc178cadabece03a2485d10281eccda2f85053b90369dfa71e99164481a1
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/479516143/minecraft-pe-free-apk-game-hack PDF link annotation
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/roblox-free-download-computer_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/robux-hack-png_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/how-to-fix-cheat-engine-crashing-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/static-moonactive-net_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/how-to-cheat-in-phantom-forces-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/hacking-coolrichytimemax-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3tangerang.sch.id/__statics/gudangsoal/files/robux-earning-sites_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_off00003192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3192 21784 bytes
SHA-256: 1f6d04347b2158b4608692672f5115b881f3396823edcd5deec6e01dc444cc0c
font_01_sfnt_off00006155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6155 18356 bytes
SHA-256: 3de400347f681560e80a0db370a0d77c7f67bbb464d37fe0ec9a1adb3b0b5f9d

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