Malicious PDF — malware analysis report

Static analysis result for SHA-256 efec152d524c5bdb…

MALICIOUS

PDF

44.2 KB Created: 2021-05-19 21:20:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f73afc83b43a396327cca294426a72d5 SHA-1: 175b6bb6e79dc74bbe50d78404d21f825f457123 SHA-256: efec152d524c5bdb163ea544b73fa6ae5bdd1e848b12adb00b648a5585cae8ca
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 0.9648

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/406889139/coin-master-free-spins-cheat-codes-game-hack PDF link annotation
    • https://dirigentigiustizia.it/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-roblox-svg_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/master-coin-hack-app_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/tiktok-free-trial-likes_GM835599320.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/mistplay-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D6 24700 bytes
SHA-256: f2cc25392d8ee35ba480e356d773a70ff947ab8af8c2d73b3074799681539386
font_01_sfnt_off00008095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8095 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00008a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A36 18224 bytes
SHA-256: 2b0c7a21f15b32e61833c84a6137fabd61f149f6731c9eb1b02707dfcd7d2dd9

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