Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d94518ce03ce581…

MALICIOUS

PDF

34.9 KB Created: 2021-07-08 01:17:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8b76b500f0a9c3d212c207f85cb094cc SHA-1: 08b98ec32711b6b28b98073081bd931acdd3f6ea SHA-256: 9d94518ce03ce581d06410c39ce41bb91dba222e4f4e91b6184ddeb4fb35d3df
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/835599320/tiktok-free-download-for-android-game-hack PDF link annotation
    • https://mountainholidaytreks.com/userfiles/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-hair-roblox_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-lumbertycoon-2-grief-hack_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-get-free-broken-egg-in-roblox-rpg-world_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-build-a-boat-for-treasure-cheats_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_off00003485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3485 21868 bytes
SHA-256: e860bf72bc84252abab1d21017f525dabb87d9008097c0a76f4106350a2ffd4a
font_01_sfnt_off000064aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AA 18552 bytes
SHA-256: 4f0e52c9c92cb3e5ff4cc5b326eac3f1a92fd54490fbced7fd08db8654d5d7af

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