Malicious PDF — malware analysis report

Static analysis result for SHA-256 20ed3d43184162a1…

MALICIOUS

PDF

42.7 KB Created: 2021-05-15 09:02:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 467daedacef5233c3591b057af8e098a SHA-1: 1d19b3e2462de02f66d57b0922ea554b011ebd81 SHA-256: 20ed3d43184162a1e664feb010e6d96b436463f48ea80bc1f1c5f5e5c804c87b
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 0.9971

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 https://netcdn.xyz/app/479516143/free-minecraft-svg-cutting-files-game-hack PDF link annotation
    • http://florentineholding.com/images/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://florentineholding.com/images/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://florentineholding.com/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://florentineholding.com/images/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://florentineholding.com/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://florentineholding.com/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://florentineholding.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://florentineholding.com/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://florentineholding.com/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://florentineholding.com/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://florentineholding.com/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://florentineholding.com/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://florentineholding.com/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://florentineholding.com/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://florentineholding.com/images/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://florentineholding.com/images/roblox-rules_GM431946152.pdfIn PDF document text
    • http://florentineholding.com/images/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://florentineholding.com/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://florentineholding.com/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://florentineholding.com/images/how-to-sue-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
stream_003_off00004b56.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B56 25488 bytes
SHA-256: d0c5b79c9a4af6e666e0938e308a8ef258405c3149dcff75c9877cf33bdd15c8
font_01_sfnt_off00008521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8521 18184 bytes
SHA-256: d8adc23434b6d0e05f295f09c84840afdc38f50d3441e35b803418cfc3e40aac

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