Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbfc29b8a0369a26…

MALICIOUS

PDF

35.7 KB Created: 2021-07-03 12:30:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d75cc9d4add9b244db4629e4e4da2ae5 SHA-1: 1142d1b7e4330322efcdf4856829ee6d1a909945 SHA-256: bbfc29b8a0369a260627792b20542aff20d579e8eee965b7da2bed9bc16be535
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/431946152/how-to-hack-old-roblox-accounts-game-hack PDF link annotation
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-hack-999999-robux-ios_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/mathep_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hackin-anybody-account-in-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hack-someone-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/pubg-uc-website-free_GM1330123889.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coun-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/hackcom-for-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/www-roblox-cheat-us-limited-amount_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-roblox-intros_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_off00003371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3371 22604 bytes
SHA-256: ac8e781a0a1ebebd995e93c7ff35e66fa8e1430232d5f438c4e2bb2db7ba1cdb
font_01_sfnt_off000065d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D3 19240 bytes
SHA-256: 9679322801c843962a27df5ec5b00a0f0b2a1d5b666d38960c93377c2d8452c3

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