Malicious PDF — malware analysis report

Static analysis result for SHA-256 de654fb38f715f9c…

MALICIOUS

PDF

32.7 KB Created: 2021-07-06 18:10:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: be9fc7139dbdd7216939fd6711f0b94f SHA-1: 21bd80f9ef6e13fd8254964d902c1dad60fbb24a SHA-256: de654fb38f715f9cd41f5994727ca2c5dab068cf161437a101a0c7f69bcd30e3
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-hack-download-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/inspect-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/working-2021-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-cheats-handy_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/all-roblox-2021-free-tails_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/robloxgiveaways-top-hack-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-discord-webhooks_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-icon-download-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/reversal-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-account-in-roblox-biz_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-spot-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-online-roblox-login_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_off00002d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D94 21232 bytes
SHA-256: a5b8c9ca02edfacaefb75d8d9852e0d0f31728d70896e659a48590e956d610ac
font_01_sfnt_off00005b8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B8E 18748 bytes
SHA-256: 7d976cf09cf6847225c0071798e8d9f98538d253ea26ac6bed308074c1f82c66

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