Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee3a2554533c081…

MALICIOUS

PDF

40.9 KB Created: 2021-05-19 01:34:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c65319ae375b55ad751ba96b42cf15ba SHA-1: 0b1bde4fe33e20f6379f88fc44c3a858b7c2dcdc SHA-256: 7ee3a2554533c0816f7e2cee925247bf5992e37fa09884f8e1e013fe0fcae6db
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/free-coin-coin-master-game-hack PDF link annotation
    • https://hotelyetihome.com/userfiles/files/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/roblox-but_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/spin-and-coin_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/roblox-hack-download_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_off0000472f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x472F 24496 bytes
SHA-256: 9e7260e0c7d1394ad50f1d55af67321ef69f4575914c8cea88e89c7c7e0ea364
font_01_sfnt_off00007f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0E 17712 bytes
SHA-256: effefb876c7a76aa063811ff0160e46fb8a90dd5507c6c48ef6fa39823ab5c8c

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