Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5706b9cb2eae51…

MALICIOUS

PDF

34.2 KB Created: 2021-06-19 01:41:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4f2bd979b1ef7a9c2896b21fd5ff1b44 SHA-1: e5507c6ab9f091515ebdcf947a1e22b4320f5e5f SHA-256: ba5706b9cb2eae518407d2829541e6146fa60a7040d532f292cffa810e2d8621
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/roblox-pizza-place-money-cheat-game-hack PDF link annotation
    • http://repository.unla.ac.id/repository/cbro-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-free-boy-hair-not-model_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/download-hack-tool-for-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/easy-robux-today-for-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-cheat-engine-hacks-admin-script_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/broken-bones-iv-roblox-hack_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-daily-2021_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_off00002f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F97 21724 bytes
SHA-256: 7712171cf839e535aa8234a2d811962821b36e54a7fa1e66da475eba8f707771
font_01_sfnt_off00005f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5E 19488 bytes
SHA-256: e49bf12b1987f312f9cdde8f64b3db6e08c18cb2bcd89c4ef2e44ef1c5c018f7

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