Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9aa8757226e054…

MALICIOUS

PDF

45.6 KB Created: 2021-05-14 21:34:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d9577b9f902062d317d4870e7dce0c45 SHA-1: 15de994de842d028b0831286e3b7ad04b0888571 SHA-256: 3d9aa8757226e054945fe37cb87546230ff6201bc0109a55a82a15bc3cc96441
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 0.9507

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/how-can-you-get-free-spins-on-coin-master-game-hack PDF link annotation
    • http://julo-it.net/images/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://julo-it.net/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://julo-it.net/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/free-spins-coin-master-hack-2021_GM406889139.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_off00004970.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4970 24976 bytes
SHA-256: ff50b30a56af3428640ac3eeab237e053301466d889acca910a17d0976f0e73d
font_01_sfnt_off00008319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8319 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00008f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9E 18352 bytes
SHA-256: 60b67ae9007cef9d51ba9fda79635e48158785d2310ed2ed67ffce6bba3269ad

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