Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bf00b5973b1113b…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 09:11:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: efb46c670a726a87eaea4edccebda630 SHA-1: 0d554c7143c0f278bc1c159caf2bc4d1e6a2a31d SHA-256: 6bf00b5973b1113bcd5c9fb0ab56ba74313b0009709562d2388ce67b5de84d1a
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick users into interacting with malicious content. It contains an external URI pointing to a URL that is likely part of a scam or malware distribution chain. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.online/app/431946152/games-that-give-free-robux-game-hack PDF link annotation
    • http://lib.stie-aub.ac.id/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/login-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-game_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F86 25320 bytes
SHA-256: d54da5e83263487ac71ede72c7ac743749b61fa926844b6f21ed49a86d02f117
font_01_sfnt_off00008a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4C 19004 bytes
SHA-256: 2c8b49b77d2c215152c292f7884bc67c80baba545cc8313e1cf14c5f8a523509

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