Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca9da05f5a234e17…

MALICIOUS

PDF

47.0 KB Created: 2021-05-12 20:05:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 369dce507b26e65523b82f5f843f538a SHA-1: 25b647566d14c5de959a19e7e759bcf7b112a3c5 SHA-256: ca9da05f5a234e1703bc47f8d730a004065edb9734d27564335e2b04dfdf1cda
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 0.8948

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/431946152/roblox-hackers-list-game-hack PDF link annotation
    • http://apteka-ot-sklada.com.ua/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master-free-spins-reddit_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/roblox-hacks-2021_GM431946152.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_off00004651.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4651 28816 bytes
SHA-256: 043407bba542ae02099f06ce4cf20febe43332c7537e11d0212e0cb87cfaf1b7
font_01_sfnt_off000087f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F2 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9499 18408 bytes
SHA-256: 45c5ba74f98a8c25ccf9e099d511e9a8e2c804404353a175448a141859ab4e90

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