Malicious PDF — malware analysis report

Static analysis result for SHA-256 de555d04d3e34150…

MALICIOUS

PDF

36.2 KB Created: 2021-07-06 12:57:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d772825db5dbb79e978fa3f436621623 SHA-1: c2e5ecbabc2ff12bfa755864e9e00d372a317736 SHA-256: de555d04d3e341507825da797b15c1ce56240e426ea69bc41a0c09117a687790
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/minecraft-112-hacked-client-game-hack PDF link annotation
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-hack-unprotected-roblox-games_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-mount-everest-cheats_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/robux-case-for-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/impact-hack-roblox-help_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-hack-khol-admin-house_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-robux-legit-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/paste-bin-animation-hack-script-roblox_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-non-free-models_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-get-a-free-hoverboard-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-spins-on-coin-master-game_GM406889139.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_off000036a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36A3 23084 bytes
SHA-256: 88181cb263b00cd70fcc29def1c12b7290d62965a26ae627324b6a072043caee
font_01_sfnt_off00006a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6D 18504 bytes
SHA-256: 1c6239c4e7240bb93b61e959f2b21d4e00e02324577494d7f11381c67a244304

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