Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0781c41921e4367…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 10:40:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 04af5105edaed3340cce2fe0611e309e SHA-1: cdcf463c92e2b98b61ccbc9d8245242890a9b7c7 SHA-256: c0781c41921e4367676a2ea85948960d12c90992bb72e6ae1ced6e43a0e24f9a
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/free-roblox-gift-card-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/rocash-com-earn-free-robux-by-watching-videos-and-completing_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-hack-cleints_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-2021-free-items_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-give-code-away-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-rewards-site_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-2021-robux-promo-code_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-robux-without-getting-hacked_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-free-undertale-clothes_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hack-for-roblox-in-game_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-piano-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-hack-robux-2021-download_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-outfits-free_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_off00002fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE5 22484 bytes
SHA-256: 5ba4d6085408d3609eec5de4f6083f46fd88bac7a02d27c8df4ddb8fe0e00a9f
font_01_sfnt_off0000619d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619D 19048 bytes
SHA-256: 7751f256669591ba1b6163ee6eba71e2718081a78833b13667734d85569e04b5

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