Malicious PDF — malware analysis report

Static analysis result for SHA-256 f001a2f8227dfe6e…

MALICIOUS

PDF

50.2 KB Created: 2021-05-10 21:02:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9e0efc1699bc0a8c7518976fe98099df SHA-1: 80f7fc2f529abd6c3c048d2ffb3cf74343144912 SHA-256: f001a2f8227dfe6e3455803201efc98a89b7bb829044edb5af2ddd376eb008b3
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 0.8594

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 https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-link-today-twitter-game-hack PDF link annotation
    • http://perpustakaan-stikesmsb.com/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e8a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E8A 24976 bytes
SHA-256: b9b74eb12f3722424c0aba9fd35aa43581ae546503f82e8fc62e8591a5c307cf
font_01_sfnt_off000087f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F4 4148 bytes
SHA-256: b93c2fde840d4b0d02710ba0b4d4073dddb8483703f80f797118ffd8bdb22f20
font_02_sfnt_off000095f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F7 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE6 18816 bytes
SHA-256: 356639b53996fb3a1c776c33674f5e11d1298eec151ba59a8b23915cad7eb01d

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