Malicious PDF — malware analysis report

Static analysis result for SHA-256 91589406a54305a0…

MALICIOUS

PDF

34.4 KB Created: 2021-07-02 07:36:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 82d9eb14fcdbf276de7b7f58f6d630d5 SHA-1: 30e06ef1cc1675763364d123c90a9de2e84924e3 SHA-256: 91589406a54305a0725fcb2466018d8c4f222637df8cb6b3ce3d59d75dee1351
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.co/app/431946152/hack-client-for-counter-blox-roblox-offensive-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/pin-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-studio-app-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-swear-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-roblox-high-school-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-the-mad-murderer-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/https-webrobloxcom-games-2021202177-creeperawwman14-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-on-your-phone_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-ooga-booga-chest-spawn-cheat_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-the-antine-villa-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-bc-on-roblox-pc_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-make-a-vip-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-and-tix-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3B 22260 bytes
SHA-256: 2c95dc00a2a5ea07696b7d81ba80c4ebf8ad31550c6444f5f16fbdebd096fe86
font_01_sfnt_off00006095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6095 19296 bytes
SHA-256: c1b6812b5dbfd1b33e12070951c058b11e7ff68fcc7049403607407aab52dcd5

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