Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b8dd84d416d979e…

MALICIOUS

PDF

48.1 KB Created: 2021-05-13 07:16:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0e0818323c1b84fd1cbd7ead815169da SHA-1: 88860c7d75d53f3dea8d11e31be9d1a8cf1124c1 SHA-256: 4b8dd84d416d979e631909dd7758c9a0f997a1dcdafa6a626fc0cc5cc717723a
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 0.8715

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/hack-game-coin-master-game-hack PDF link annotation
    • http://www.fanciullovito.it/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://www.fanciullovito.it/images/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004975.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4975 25516 bytes
SHA-256: 02bccc2ab5012c6e57d77a4aebb7fde073c642b8a6ac7fbdce062383b450f72b
font_01_sfnt_off00008280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8280 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00009020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9020 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A0F 17976 bytes
SHA-256: c3aba157755e6a0d5120dc2640c0f2b2d2d3e911b40ce180ffdd05c08da36b6c

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