Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d6a5bbff4d142f…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 16:41:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 118d44887814873bc695f8480b4a8bc1 SHA-1: aae76ce537d02bf3089bb77b5429ad324beaa48c SHA-256: d6d6a5bbff4d142f1693bb083e8e3d11ad744eba2aa81a42e8902c14528f0e9e
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.co/app/431946152/how-to-make-things-free-on-roblox-game-hack PDF link annotation
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-sketch-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/free-cool-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/free-robux-no-downloading-apps-or-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/www-robuxmaniac-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/youtube-roblox-how-to-get-free-money-on-ro-citersenz_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/coin-master-hack-apk-2021-ios_GM406889139.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_off00003291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3291 21624 bytes
SHA-256: ca611a9bf97ae9e64bee454e7e557cc385493f72b201f39cf38a1544796150fe
font_01_sfnt_off000061c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C7 19464 bytes
SHA-256: 5db054ebfef142f2c84862e4de277e1d32e4bb72617d9e72d9935489094d8d46

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