Malicious PDF — malware analysis report

Static analysis result for SHA-256 179e8eeb8c44bb37…

MALICIOUS

PDF

35.6 KB Created: 2021-06-28 21:36:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6a8ea443ccf86d6b715eec8b5962a2e6 SHA-1: d44a8e688b2ad2cd18d2c32f3f4231e904b7d6dc SHA-256: 179e8eeb8c44bb370bc44573d4d1369ce35c3c9b0c0240e317233fea5ab615b7
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/dungeon-quest-roblox-hack-download-game-hack PDF link annotation
    • https://www.skygan.com/uploaded_files/userfiles/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/robux-xyz_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/roblox-cheat-engine-66-bypass_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/robux-for-offers_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/granny-roblox-games-for-free_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.skygan.com/uploaded_files/userfiles/files/coin-master-card-hack_GM406889139.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_off00002fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC9 23116 bytes
SHA-256: dff8a092416ebbf7f58b9221a9926735823804be06544d3926fdf68d64250b3f
font_01_sfnt_off00006427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6427 19564 bytes
SHA-256: 115ec0724103f3b5da0012593642a742bd6a5cad4b115f146e7e8189c39ad7ea

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