Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f06bdf2079e953d…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 16:54:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ac2a9aa37fbf3e5cd4c209ef87281fd8 SHA-1: ce13ae41b81640a5e03c293a1537f07f8a66f2b7 SHA-256: 4f06bdf2079e953dc29b29d8ea330f8525c38b676d02c8deda86104bfecdd7fa
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/406889139/coin-master-hack-blog-game-hack PDF link annotation
    • http://www.vermaagri.com/uploaded_files/userfiles/files/roblox-is-hacker_GM431946152.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/unpatched-cheat-engine-roblox-2021-february_GM431946152.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/how-to-hack-roblox-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/hack-para-cualquier-juego-de-rpg-en-roblox_GM431946152.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/roblox-spieler-hacken_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/roblox-the-legend-of-the-bone-sword-hacker-rom-code_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/free-robux-cheat-engine_GM431946152.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/hacking-roblox-with-code_GM431946152.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/how-to-put-music-into-any-roblox-game-hacks_GM431946152.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/https-www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/get-roblox-free-online_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_off00002ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECD 22744 bytes
SHA-256: dbf42b360f751b7f3ee73700846d326a911ada047fab6d059666b3e2f0fbc8c0
font_01_sfnt_off00006178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6178 18292 bytes
SHA-256: 2891084f8fa5c2c0e6c841cdb53d35ece19ebb9e0ce919e53ca34871b678217e

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