Malicious PDF — malware analysis report

Static analysis result for SHA-256 56a85707ba9db819…

MALICIOUS

PDF

35.0 KB Created: 2021-07-19 10:32:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b30a7f6130e7c7df9445c47b1c9294fe SHA-1: 962ac6ca404736739b3bf3720cb7670f84036d70 SHA-256: 56a85707ba9db819d4b90b6bdbed008ff46932a1e853318a2af98a488644e301
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 http://netcdn.tw/app/835599320/tiktok-likes-free-game-hack PDF link annotation
    • https://www.stayon.no/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://www.stayon.no/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://www.stayon.no/images/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.stayon.no/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://www.stayon.no/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://www.stayon.no/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://www.stayon.no/images/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://www.stayon.no/images/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.stayon.no/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://www.stayon.no/images/how-to-hack-roblox-accounts_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
font_00_sfnt_off000037ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37EE 22368 bytes
SHA-256: abb1dbc4c4044821f113f242b575c68949acd94a456dfe1539b68255e9f2ac6f
font_01_sfnt_off0000698e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x698E 17456 bytes
SHA-256: 6bc07a916d4e04dd857b15fc22f6a85a1633f574b63a4730ea8dc15634c660b5

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