Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae5f7534d323824…

MALICIOUS

PDF

41.6 KB Created: 2021-05-14 01:31:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b0ba85816f32384db2f6dfdd551864ea SHA-1: 4e3167d748cb1df164b8aa58b15efc7d1b0e8666 SHA-256: 1ae5f7534d32382448adcd6b061e567cfcf980299d5f4e63b084e03122a54d0e
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-xyz-game-hack PDF link annotation
    • http://grazzio.ru/images/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • http://grazzio.ru/images/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://grazzio.ru/images/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://grazzio.ru/images/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • http://grazzio.ru/images/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://grazzio.ru/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://grazzio.ru/images/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://grazzio.ru/images/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://grazzio.ru/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://grazzio.ru/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://grazzio.ru/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://grazzio.ru/images/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://grazzio.ru/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://grazzio.ru/images/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://grazzio.ru/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://grazzio.ru/images/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://grazzio.ru/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://grazzio.ru/images/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://grazzio.ru/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://grazzio.ru/images/is-it-possible-to-get-free-robux_GM431946152.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_off000047c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47C1 24616 bytes
SHA-256: 4129f075e48c475f02d72db2ce411e6f1d35d9405f65d37044a69b09be63d986
font_01_sfnt_off00008019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8019 18204 bytes
SHA-256: eb378c11d4c3edf43fd4a317fe896922564aeaa66921672c4d59ab66e1a3bbf9