Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a2dcb55ce66e69…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 18:33:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 51679e567b252b1b3c7411fcefcd5802 SHA-1: aabfdd82dbe2ad34f1ff162b4be00712fff6da88 SHA-256: a2a2dcb55ce66e696b0c8a59600194097070801a5f3f9c78dd921e414efd827f
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/406889139/coin-master-game-hack-game-hack PDF link annotation
    • https://pt-mataram.go.id/perpustakaan/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-free-robux-no-generator-ios_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/cool-free-roblox-characters-uu_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-hack-ghost_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/changelog--free-codes-https-devforumrobloxcom-t-infinityrpgc_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-kohl-admin-house-hack-2021_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/robux-hack-mobile_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-phantom-forces-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/collect-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-console-hack_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-trolling_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-mcdonald-tycoon-cheat_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-hack-roblox-on-cheat-engine_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-how-to-cheat-on-fantom-forces_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/robux-hack-no-download-2021_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_off000033f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33F0 23176 bytes
SHA-256: 390c96e9a48fc58f642e460e3f4dc6c2ea40155c4ea5765fe8c24c84b9012a54
font_01_sfnt_off0000681e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681E 18264 bytes
SHA-256: c1c21b29a6afb4d06e4d6845aa9afd5500216469eff45eb2d027be7bd9c24dc5

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