Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d042faf3fcc4d92…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 12:37:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f6aef9ee48e4554d8ae56912839acc09 SHA-1: 875cc154f01d9b35bd91819c2018b5b25dc98723 SHA-256: 4d042faf3fcc4d922da9665888ef356bb7fa46c1ca1ceb9724dcc3961584556f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document uses a lure related to 'game hacks' and 'free generators' to entice users to click on an embedded URL. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the document body content strongly suggest a social engineering tactic to redirect users to a malicious site. The presence of an external URI and the ML classifier's high confidence further support this assessment.

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/431946152/how-to-get-hacks-on-roblox-game-hack PDF link annotation
    • https://library.elkatarie.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/cheat-roblox-one-piece-millenium_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-free-not-to-download_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/descargar-asshurt-v32-hack-para-roblox-torrent_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/cheat-roblox-counter-blox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-level-7-executor-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-free-download5mio_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/descargar-roblox-mod-hack-apk_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-free-robux-from-bloxmarket_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coll-roblox-game-to-hack_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-free-robux-in-roblox-2021-easy_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-hack-filtering-ebabled-game-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/774-hack-roblox-jailbreak-download_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-change-name-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-real-no-verification_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-by-joining-a-group_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-free-no-sign-up-no-download_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-hack-roblox-to-find-old-password_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/best-roblox-hack-download_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
font_00_sfnt_off00003106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3106 22052 bytes
SHA-256: e0b681e9843fe35f174c6f4696b3f682a1d8c4f644b9666f37990240c126c8c0
font_01_sfnt_off00006208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6208 18924 bytes
SHA-256: 8cdc80fef149013af70ce1ea380cb26237808cf67cdf225847d5804ac9d16e08

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