Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa106c54a1b356da…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 19:57:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d893edef2742107139a1677409f062c2 SHA-1: 96db47c87e5cfd185f1f52764475e1c4df7c661b SHA-256: aa106c54a1b356da589e44e6602f77c12b74096f58d841bb882fe22ec418557b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, many of which are presented as download lures for game hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for such content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.co/app/431946152/flee-the-facility-roblox-hack-exploit-gui-game-hack
    • http://digilib.iailm.ac.id/repository/hacks-de-pago-para-roblox_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/hack-roblox-ropa_GM431946152.pdf
    • http://digilib.iailm.ac.id//repository/free-robux-generator-2021-no-human-verification_GM431946152.pdf
    • http://digilib.iailm.ac.id//repository/coin-master-time-hack_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/coin-master-apk-hack_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/hack-coin-master-android_GM406889139.pdf
    • http://digilib.iailm.ac.id//repository/coin-master-spin-link-today-free_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/how-to-make-a-roblox-hack-visual-studio_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/hack-version-of-coin-master-apk-download_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/v3rmillion-hacks-roblox-ro-ghoul_GM431946152.pdf
    • http://digilib.iailm.ac.id//repository/clean-master-free-coins-and-spins_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/dex-20-free-download-roblox_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/free-account-roblox-generator-download_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdf
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-2021-no-human-verification_GM406889139.pdf
    • http://digilib.iailm.ac.id//repository/free-spins-for-coin-master-2021_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/free-coin-spin-coin-master_GM406889139.pdf
    • http://digilib.iailm.ac.id//repository/coin-master-fan-page-giveaway_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f5a.bin
3ea27073cb8adc27dc9b650269e441bcc4d4ac5d41a3a0e61eefade85a367cfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5A 21832 bytes
font_01_sfnt_off00005f60.bin
e15654ab5c6a57b15cc90cd2a90d0ca66507fb165342e4423f926873bedc83f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F60 19704 bytes

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