Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd8330cb945fe69…

MALICIOUS

PDF

44.0 KB Created: 2021-05-17 21:13:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 53f965e2646d0a2f477ad86cbfcf7680 SHA-1: 34817c7e42d432db8bf7bcb3c24686e82f6ae7ba SHA-256: fbd8330cb945fe696ef283e4b195061e93365d3d29bb8b1270674f6fd37e554b
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 0.9648

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/406889139/coin-master-hack-tool-v1-9-pc-game-hack PDF link annotation
    • http://medinup.pt/images/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004737.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4737 24476 bytes
SHA-256: 9a01167b369e7e4d1b87c7f99796896672170995b37fa261ba671bb8b7d0ac41
font_01_sfnt_off00007f06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F06 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000088f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88F1 18348 bytes
SHA-256: 043ae0b56aad5775724b1167a22d37e7f80b7d9c769434f087fac9bc97f423c4

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