Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbbdd6b0d287de20…

MALICIOUS

PDF

35.9 KB Created: 2021-07-01 09:47:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c44055c9fec38286a4f8787fc60771c4 SHA-1: d65d29db2ca8b68a8d1044492151d98def0a255f SHA-256: dbbdd6b0d287de20614d99727344c6f74f0e6afa1eccf54fc5fc23cea1ea4407
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-get-free-robux-without-human-verification-and-survey-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-make-shirts-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/mediafre-download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/big-brother-roblox-exploits-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/can-you-please-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-on-computer-no-scam_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-official-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-admin-with-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-do-i-log-into-my-hacked-account-on-roblox_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_off000031db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31DB 22320 bytes
SHA-256: 73b6ae614838b8adbdb9398c7c1575e458635fc87cccbdf133efe4382c479745
font_01_sfnt_off00006393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6393 20332 bytes
SHA-256: 9529725f4c216e45a38201c2875adc378e2ca70232a899f566793dd4e3e58426

Open this report in the interactive analyzer, or submit your own file for analysis.