Malicious PDF — malware analysis report

Static analysis result for SHA-256 937f1979535e5f22…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 09:25:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8ed4dd75fa6f80bba9118b4ac7ae23f8 SHA-1: fb83845ce3e18a9ab2e5217282e37443c2ca0249 SHA-256: 937f1979535e5f2294b7d87b808e67309f8bb0d837e97db1be356c5e26c8642e
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 0.9980

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/479516143/how-to-get-free-mods-in-minecraft-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/best-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/cheat-monnaie-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-times-table-1-reasesen-56-friv-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/tampermonkey-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-do-you-change-your-roblox-name-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robux-hack-youtubecom_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-minecraft-windows-10-account_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_off00003197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3197 22832 bytes
SHA-256: 719ca8fc306c38a896c8358f8e1c423e9a56ca3765f5c0c3783753f32f39b0e3
font_01_sfnt_off00006495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6495 18336 bytes
SHA-256: 70b6f7d086f064c688a26537650d273c761baed84510a3b1aafdb5c6054c2f47

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