Malicious PDF — malware analysis report

Static analysis result for SHA-256 e23435ef9a2a3ede…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 19:17:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 93c85c851cc7bbace0c0d6e547b624cb SHA-1: 17d5e3676a4b2af0b60ea40ae53266e0619e6f57 SHA-256: e23435ef9a2a3edea640c0ecd1daa85c6d5d5977bb6adcdf82d96d992aa99ba7
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/479516143/how-to-get-java-minecraft-free-game-hack PDF link annotation
    • http://battistibrothers.com/system/userfiles/files/download-roblox-mod-apk-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/hack-richest-roblox-account-deleted_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/claim-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-hack-roblox-accounts-october-2021_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/apps-that-you-get-free-robux-from-nothing-to-install_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-tower-defense-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/avatar-animations-roblox-free_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/getbucks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-cards-link-2021_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_off00003354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3354 21976 bytes
SHA-256: d14df4608b118ba888ab2e48bf5a4bd1749a1962ce7978223e37a0c86f2ab6f9
font_01_sfnt_off00006384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6384 18444 bytes
SHA-256: c9d7907f94a8ada23db2a769c78fce1d5854e09f64104062867272f149f89d70

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