Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0495a11f67af808…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 12:33:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 767dda16efbc8afe5f8bf8a088698556 SHA-1: 548181c6844679c18cc1033dd520a4cbaeae0a4c SHA-256: b0495a11f67af808ad225e30a3ddcacbd03434350ec733a24e558c306df265f3
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 0.9971

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-no-verification-2021-game-hack PDF link annotation
    • http://kontaktadig.se/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://kontaktadig.se/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/simplysarc_GM479516143.pdfIn PDF document text
    • http://kontaktadig.se/images/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-hack-online-link_GM406889139.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_off0000498f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x498F 25904 bytes
SHA-256: a6ebdcfe3388921289f08ed50f9f48e43fe84b963cb12cdc3cae369fcc027315
font_01_sfnt_off00008411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8411 18252 bytes
SHA-256: 180d563c5e2d4e96f25bdfb7de4de3bd7d6a0696216fbddae55f211609535b0c

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