Malicious PDF — malware analysis report

Static analysis result for SHA-256 712a23738c81eee4…

MALICIOUS

PDF

43.7 KB Created: 2021-05-19 17:12:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 01f678926a7fec9f77b5bb0ed129ab03 SHA-1: 8862ce5cd9b1b61088650cb918f0fbf6c0d6be4a SHA-256: 712a23738c81eee4ea2f6a9eab2f669f38bf9dbb83aa7c29acab76b54939a09d
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 0.9969

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/free-robux-without-human-verification-game-hack PDF link annotation
    • http://neumann.fr/images/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/earn-roblox_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://neumann.fr/images/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://neumann.fr/images/minecraft-free-no-download_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
font_00_sfnt_off0000470c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x470C 27192 bytes
SHA-256: 92f5617735d918e05a4e1d8df2187167f08f8119b80b3955e04840d73726ea0c
font_01_sfnt_off000085f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F2 19224 bytes
SHA-256: 69162c0303826e3a88150cee7b6b12b50ba56e04bc46253c0e5eb9f80ac8a399

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