Malicious PDF — malware analysis report

Static analysis result for SHA-256 4720ecff179e4044…

MALICIOUS

PDF

36.0 KB Created: 2021-07-01 07:11:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e5535ed7a1b6cfa8b7f103347ca1c0bb SHA-1: 6b0d0c29c5e96990f142891c0bbd7a55a77a16f8 SHA-256: 4720ecff179e40442b8e878bb825bd26590e1aa4e10e7f2460971444c455fbd5
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/character-robux-hack-in-youtube-game-hack PDF link annotation
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/hack-roblox-with-lucky-patcher_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/full-throttle-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-online-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-no-clip-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/camera-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-free-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-cheat-robux-apk_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-hack-build-you-one-boat-ccv_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-get-all-gamepasses-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/free-roblox-faction-defense-level-code_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/how-do-you-hack-players-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/free-robux-codes-september-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-god-simulator-hack-gui_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/free-hats-roblox-2021-unpatched-urban420netwrok_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/nexus-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-hack-with-cheat-manager_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
stream_002_off000034d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34D7 22756 bytes
SHA-256: 3e9beef8598ba5c4449d37fc846075084bdb9a80993f78bf857a928f8a9d59f8
font_01_sfnt_off0000679b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679B 19152 bytes
SHA-256: 5c808b0ac8001664186260f5db43585f3fd3298d703ee2df74421283fb17c812

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