Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da2dab2c3ff9eaa…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 02:48:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a3399b454541014c020852449fe6bea2 SHA-1: 343d177730ce1602986fe1c4f9236ade0d3b2ed2 SHA-256: 2da2dab2c3ff9eaa98b40f375070b910e4cba10b68e5cdd9758bfacdee0e97aa
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a lure related to 'Free Robux Generator' and 'game hack' to entice users. It contains a high-risk external URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution chain. The ML classifier also flagged this PDF as malicious with high confidence.

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/free-robux-generator-com-roblox-hack-game-hack PDF link annotation
    • http://opac.disarpus.surakarta.go.id/repository/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/meep-city-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-hack-roblox-accounts-2021-console_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/hacking-discord-server-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-codes-free_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/mcpe-download_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/com-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/cheat-codes-song-from-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-get-bc-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-use-slayer-leecher-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-hack-roblox-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/download-hack-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-vehicle-simulator-money-hacks_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_off00002e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E38 22120 bytes
SHA-256: 3baff8e5a24e932fb5e0918158c68e125d56ec77c2ced20850a10b12284a4e42
font_01_sfnt_off00005f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F14 19324 bytes
SHA-256: b5fe64a349a1260a8bf1e39cb434a35d84e03f20b24c2703f62dd6d7df3547b9

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