Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbb01ee6372e801d…

MALICIOUS

PDF

45.3 KB Created: 2021-05-12 10:34:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c705eb1ccc59c3aeda0a5aa815103769 SHA-1: fbf70cbc60f00d64e38a1c8c8348095b45a021b9 SHA-256: bbb01ee6372e801db1bb1cd9afb70a1455ac287b111effddc87e2aa9127bac28
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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-verifying-game-hack PDF link annotation
    • http://lib.stie-aub.ac.id/repository/wurst_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.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
stream_003_off00004d2e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D2E 26868 bytes
SHA-256: edb5ae03ef8ae8c72f4356186aebbdbdf32ad898005c916011d2c3930388a702
font_01_sfnt_off00008bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBA 19368 bytes
SHA-256: 63de63cfc252acdf530e8b3b2390dbc20d855d9653817057ed506b48c41b68ab

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