Malicious PDF — malware analysis report

Static analysis result for SHA-256 0937396b88490e7b…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 23:31:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0524e6c9fd3d015b65e6f5c98de857bf SHA-1: 20e73cd4fd4a34e984cf89e1d82e01ce3ba71961 SHA-256: 0937396b88490e7b3d1bbf0347cba695153c700d6ee5dadcc6ca1efe93c80691
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure related to exploiting games like Roblox and Coin Master, directing users to a URL that likely hosts a malicious payload or phishing page. The ML classifier strongly indicated maliciousness, and the presence of game hack lures and embedded URLs supports this assessment. No scripts were extracted, but the document's primary function appears to be social engineering via a malicious link.

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/how-to-exploit-roblox-without-cheat-engine-game-hack PDF link annotation
    • https://pt-mataram.go.id/perpustakaan/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/robux-cheats-com_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-roblox-gift-card-codes-2021-may_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-fix-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/military-outfit-roblox-free_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-robux-using-hacks_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-hack-electric-state_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-free-clothes-on-roblox-nbc_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/tiktok-for-free-movies_GM835599320.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-free-robux-mod-menu_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-no-survey_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_off000030bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BD 22028 bytes
SHA-256: 2ca9548355cd5ad9bca1dc243d88f27512246e7e792d52ac3fbba10091dc5f92
font_01_sfnt_off0000619c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619C 19556 bytes
SHA-256: 0a8653f9168e7a216717bde694b9bfa4dfb68d63f2e9436a838645ccb7ffc525

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