Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2737dfb35990f53…

MALICIOUS

PDF

32.9 KB Created: 2021-07-09 07:45:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: bb1f652f44eb84e41e0ca4b1119fdb77 SHA-1: 8dea8583525263215b6e7150f0a3674c276c49c7 SHA-256: e2737dfb35990f5393f913279e78bc298fce298edfa0ba4ec968b04dd54259bc
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/how-to-make-a-minecraft-server-for-free-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/roblox-q-to-script-script-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-create-gui-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hacking-exploit-scripts-for-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-hackeado-pc-gratis_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-hack-roblox-accounts-december-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-play-as-guest-free-unblocked_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-inspect-element-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-free-account-generator_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-gift-card-roblox-giverway_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-make-free-shirts-in-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-nike-pants-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-exploiter-hacked_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-free-promo-codes_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_off00002db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB4 21612 bytes
SHA-256: 6d86c2bb0c7e58f0d7a39c6f9680228cd9ee51f6d96c71db28cfe018b85327c0
font_01_sfnt_off00005d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1D 18448 bytes
SHA-256: b3df4715d3d10d222cd03830af22d55d1fd09053c89107a65193d49beb578ea8

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