Malicious PDF — malware analysis report

Static analysis result for SHA-256 12166b68aab5083e…

MALICIOUS

PDF

44.6 KB Created: 2021-06-09 02:47:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 19f6f588c6e4ac3c2da6033d49bd3202 SHA-1: 2ab67786343e55346fa7b896b64ab77487efa18e SHA-256: 12166b68aab5083ef1c5f213885523ce768cf0a8a4840b8908eaa7d3fbae59b7
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 0.9865

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.tw/app/406889139/coin-master-free-spins-link-today-facebook-game-hack PDF link annotation
    • http://www.eaapiaria.es/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/how-to-play-roblox-on-xbox-360-for-free_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/minecraft-ps4-free_GM479516143.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_004_off000051c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C4 25060 bytes
SHA-256: 924f6367ba85fc6a76d0ab9a64164c61cff881833cbf6afc5f040f3e2e28b4bf
font_01_sfnt_off00008aa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA6 18568 bytes
SHA-256: 976bad0f84eadf36fe6397f68da5c043a767fda9c526d6325df07f5c92c7ef85

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