Malicious PDF — malware analysis report

Static analysis result for SHA-256 36b71e57108a62a1…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 23:36:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bf8a592894f6f43aff1af5f50408b2ba SHA-1: d801f1589ea9ff94f31f12e14d631abffb20a9ff SHA-256: 36b71e57108a62a1400533d3bbab9cb6c77b6782c5f5538919cdfb635c18ca01
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs, many pointing to an IP address, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The document body and extracted URLs suggest a lure for game-related cheats or currency, likely leading to malware or unwanted software downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/dailyrobux-game-hack
    • http://103.30.145.97/__statics/gudangsoal/files/buy-robux-free_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/can-you-get-minecraft-for-free_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/minecraft-windows-10-free_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/hacks-and-cheats-for-coin-master_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/earn-free-robux-for-roblox_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-hack-org_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/adopt-me-roblox-hacks_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-hack-coin-master-spin-ios_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/promo-code-free-robux_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-spin_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-rewards-app_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-free-spins-facebook_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-free-attack-link_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/gold-card-coin-master-free_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-spin-coin-master-hack-2021_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-hack-online-without-human-verification_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-sites-youtube_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f7c.bin
90b09fb23e2faabf85c465130bc16c36dff29e2df9dfc0da1a9214f55aa13bee
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7C 22368 bytes
font_01_sfnt_off0000612c.bin
319a3b741e60406540a19adb70d742732d8bf817a9bc58f36e4d58ba7e1a6a2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x612C 19092 bytes