Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbb30ef4bf2cb9d1…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 20:57:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 839616f58c4464e6de0d355ce9c3097e SHA-1: 17a9ac634958ec7406fe0d411f1a961b6a7e17c1 SHA-256: bbb30ef4bf2cb9d1f3b8e620e05fd8f45f0d38df37860e239f366845cbb74062
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/431946152/how-to-hack-in-roblox-prison-life-game-hack PDF link annotation
    • http://cintabaca.org/katalog/repository/hack-roblox-apk_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/script-hack-2021-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/robux-now_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/robux-hack-created-by-robuxian_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-robux-using-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-do-you-get-builders-club-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/games-for-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-prison-life-wall-hacking-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-game-scripts-pastebin-free-gamepass_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/cheat-engine-65-download-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/roblox-promo-codes-generator-no-human-verification_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_off00002dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBB 22440 bytes
SHA-256: 6b0c31155b9d73ba3d40391ca3c433f18bc414ae82cfd68b2a9be7a281b77910
font_01_sfnt_off00005f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7E 19092 bytes
SHA-256: a35ded4b1533c5edb4693f0e9c1cbeeca8a6631724cd2872fdcfe7178e5551db

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