Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d4a36309804321…

MALICIOUS

PDF

41.4 KB Created: 2021-04-30 16:35:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5b472f59a121f89edd36d41101e0ee31 SHA-1: 80eff08a44b49eecce4c381a818af586af0c07a6 SHA-256: 97d4a36309804321a61865ef13c86c4ff11920a447324c949f4b4981bb554d89
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 0.9941

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 https://netcdn.xyz/app/431946152/ore-tycoon-2-cheats-roblox-game-hack PDF link annotation
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/roblox-hack-unlimited-robux-download.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/lemonaid-roblox-hack.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-robux-club-com.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-robux-scam-site.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/roblox-hack-download-xbox-one.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-meep-city-2021.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-robux-followers.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-cheat-in-growing-up-simulator-in-roblox.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/roblox-hack-obc-2021.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/robux-free-no-robot.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_003_off0000442f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x442F 25916 bytes
SHA-256: 009751cd7c58559dc9fae0c759700b35f4a3af897de5e5791c7b486b6e9fb11b
font_01_sfnt_off00007f03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F03 18584 bytes
SHA-256: 2f939a86fb49997c926ca340f6c892dfefa24018f2d522a8f172afe297c58ba8

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