Malicious PDF — malware analysis report

Static analysis result for SHA-256 7907472de6516943…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 08:13:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8dc5793becd8da34ffa7185fb837b24b SHA-1: 9669e6f8655bff95ef9ca556c9f321cad758cb96 SHA-256: 7907472de651694308ec1aeaf2816b05ae5f14a2895250189d5845704bce5e4a
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-robux-discord-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/roblox-free-skin-robuxed-no-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/all-hack-week-2021-projects-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/gravity-coil-roblox-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/real-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-outfits-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-make-your-own-game-whith-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-cheat-is-guess-the-song-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-posed-ffreddy-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/all-free-roblox-2021-accessories_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hack-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-robux-mobile-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-tower-defense-simulator-hack-script_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-no-verification-2021-ios_GM431946152.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_off00002f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F95 22616 bytes
SHA-256: 5566953491d72761f7c45fa1da0ee1a3788dee569d4035d53ba4bd56ff31547b
font_01_sfnt_off0000623d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623D 19176 bytes
SHA-256: 020ce166f16710322681f054c1b4dde0a486d6154bce33e9144977aac3b53b16

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