Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d62e226fef6e89…

MALICIOUS

PDF

35.4 KB Created: 2021-07-07 16:12:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a5535e1b29df2cec3da59df5b08ac417 SHA-1: 9a5321e505a139ab2cf6d0f07138d1338071d902 SHA-256: b6d62e226fef6e899b15dcdc87be4100d14c14ffa96dc5865c881ccf879e365b
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/roblox-free-robux-hack-game-hack PDF link annotation
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/roblox-free-robux-codes-pastebin_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/how-to-get-a-free-boombox-in-roblox_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/i-want-free-robux-please_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/redeem-roblox-virtual-item-free-codes_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/how-to-get-any-gear-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/free-promo-codes-for-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/robux-hack-downlaod_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/how-do-you-be-a-hacker-hacking-into-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/avatar-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku//repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku//repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/how-to-get-free-robux-no-inspecting-hacks-or-cheats_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/free-robux-with-no-verify_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/roblox-gift-card-codes-for-free_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/comment-hacker-robloxe_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/all-free-roblox-emotes_GM431946152.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku//repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://uptperpustakaan.unismabekasi.ac.id/katalog-buku/repository/free-script-codes-for-roblox-executors_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_off000033c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33C8 22468 bytes
SHA-256: 57869c7e3c4477f7ad7f868a73dcaa9b786524ecd42d8bd0f89e2007b071c794
font_01_sfnt_off000065d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D2 18960 bytes
SHA-256: 4bbd4e0b11a4de08a120ed278073258e380cedc6aab10c61138cdabd5952661a

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