Malicious PDF — malware analysis report

Static analysis result for SHA-256 c71e1df167df25fd…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 11:23:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5547d1337842f82c39c6a024366a28e6 SHA-1: 56908b5d5d73724ce47963ccb9f385eb8eea349b SHA-256: c71e1df167df25fdae3117ff147a6257ebf3eaf715fe19b110fad956c8170c09
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary lure pointing to 'hacks-roblox-game-hack'. The ML classifier and specific heuristics strongly indicate malicious intent, likely a phishing or scam attempt disguised as game-related cheats. No scripts were extracted, but the document's structure and embedded links suggest it's designed to redirect users to potentially harmful websites.

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/hacks-roblox-game-hack PDF link annotation
    • http://library.sdkmaterdei.sch.id/repository/hack-nuevo-para-roblox-2021-editar-servidor_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-free-robux-on-roblox-ios_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/hack-an-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/hack-for-pet-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/como-consegir-robux-gratis-sin-hack-beteg_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/get-free-robux-live_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-speed-hack-script-v3rmilion_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-earn-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-masks-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/get-free-money-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/wwwroblox-freecom_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-logo-maker-free_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-items-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/comment-hacker-robux-sur-telephone_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-welcome-to-bloxburg-cheats_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-november-2021-hacks-1-day-ago_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/minecraft-free-app_GM479516143.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_off00002fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD7 22308 bytes
SHA-256: cf917465eb17aa16307118cc9e30f05c1e1437e6a3abe3f189eba1d8fe868042
font_01_sfnt_off00006177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6177 18656 bytes
SHA-256: 07359c60a6ef94fa5b03a0cb2f18a240aa89d678f31d64c89b09ee8dd6172433

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