Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd081871195bcab…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 11:03:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 6d81c88c4c3907ee0ca074ff891d5531 SHA-1: 760d26c7e6ae5f4f81e7ff050250246c525e69ca SHA-256: ffd081871195bcabb06e2adff5576001d8cc209d4127b08bdbb38f10d7efd4a4
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/406889139/how-to-o-get-free-coin-master-spins-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/hack-downloads-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/laxify-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/mcpe-116_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/cool-roblox-free-games_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-2021-app_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_off0000332c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x332C 22004 bytes
SHA-256: 145df84fc47c80b3ae41dfc8560777a569273b3ac938a13491c32221fd3ade8b
font_01_sfnt_off000063ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BA 18336 bytes
SHA-256: 88fb275224d01e2fb2ba19e8488dcc02f674101147b00fcd4e979f6cbde2f727

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