Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d4eb1813465703f…

MALICIOUS

PDF

32.6 KB Created: 2021-06-25 18:20:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8506dd8421c14876c2c3634872353ab6 SHA-1: bd4cc686f3f925333666395502072f955a76d072 SHA-256: 1d4eb1813465703fe67ae32ac161bcff3a444aba7b63d8d790db9ea34f753425
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.co/app/431946152/how-to-get-free-robux-east-on-anithing-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/robux-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/claire-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hack-v6-5-download_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-online-us-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/fondo-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-buiders-club-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-ios_GM406889139.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_off00002a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A06 21728 bytes
SHA-256: 97e2670d7640f6d11a9c3a1fe0fb664c16982acac7572d872ffcb0cd3401dd2f
font_01_sfnt_off000059fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59FC 19272 bytes
SHA-256: bf4480ae154a91900c1ddcc7e32248697e6bbfc3afc45eb513c935958b3c4736

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