Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf47324eea487c8…

MALICIOUS

PDF

35.1 KB Created: 2021-06-28 03:26:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 94f1ebd0a266e86d456fe529dca58993 SHA-1: a5e9b6b895a095781304bb0f076cc4873a6f4f3a SHA-256: fcf47324eea487c8b19079599830789fb0480d684b0ae73abc83e7ed3bd139f3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it's a lure for game hacks, specifically linking to a URL that promises 'Bullet Hell Hack Roblox'. This URL is likely a redirector to malicious content. The ML classifier strongly flagged the PDF as malicious, supporting the conclusion that it's designed for user deception.

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/bullet-hell-hack-roblox-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/accessory-hat-ashs-hat-on-roblox-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-durag_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-promo-codes-roblox-group_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-make-a-roblox-thumbnail-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/mega-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-roblox-knife-simulator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hack-site_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_off000031f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F7 22680 bytes
SHA-256: bb997cef70364586168bc0a6bb5f20968c247b82f8b32e15edaa5923a1ba153c
font_01_sfnt_off00006461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6461 18900 bytes
SHA-256: 96ed30d13a5e0ab8bb1bcdd021cc0cabb6ad19d886f92f202df76575d0b4a0d1

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