Malicious PDF — malware analysis report

Static analysis result for SHA-256 fffb228355253bd2…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 02:08:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 92c55c056f9a2818ccb9d7f4166fce60 SHA-1: 29b90f762e0c57fd0a504f7f615bbe2a4dde5893 SHA-256: fffb228355253bd2d32036c0d68d99a78b5a25bc4b8c4f91b2aa1516c6de92a8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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-free-download-linux-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/roblox-hacker-shirt-template_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-retail-tycoon-cheat-engine-download-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-was-hacked_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/actual-up-to-date-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/veil-free-download-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-saob-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-jailbreak-cheat-money_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/artmoney-roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-ninja-animation-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/future-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-catalog-free-oo_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-real-easy_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-using-html-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-hack-mod_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_off0000301c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301C 21932 bytes
SHA-256: 8dec03cc6de9ef00caaa899d625e6acd537f9ba1853fd583938b724581eb102e
font_01_sfnt_off00006081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6081 18928 bytes
SHA-256: a6d6d3b5de8a59e9ac0f8784111a009c27ee8fccd7e6d0edb578a3cd59b44339

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