Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84b734d059543a1…

MALICIOUS

PDF

33.4 KB Created: 2021-07-06 09:10:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 03ee8136aaada21e0b9ad20eb449c43d SHA-1: ca187cfe30d0c7234c94d7fafd62d6c979a8d4f4 SHA-256: e84b734d059543a16e53c3e43ff8b1cc91b995958c2ffe7fabfcf08504070bdd
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 0.9824

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/431946152/roblox-money-hack-game-hack PDF link annotation
    • http://library.stipjakarta.ac.id/etd/repository/this-code-gives-you-1-billion-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/unjailbreak-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-roblox-fe-scripts-pastebin-july-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robux-and-tix-hack-no-survey_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/escape-school-oby-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-lets-play-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/download-roblox-cheat-engine-55-for-free_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robux-promocodes-no-hacking_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/rbx-earn_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/dominus-hats-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-robux-working-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robux-free-codees-legit_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-retail-tycoon-116-hack_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-scripts-jar_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_off00002b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B2B 22756 bytes
SHA-256: df7030328df956c3164a2dd565158b54b121c55afeda789a1c5ae8b0dd4d1234
font_01_sfnt_off00005df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF2 19032 bytes
SHA-256: 203e1121f486a9f27f7b8b1bc344d44945bd10d034850d35ac5f84883fff97b4

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