Malicious PDF — malware analysis report

Static analysis result for SHA-256 307e017be5bebf35…

MALICIOUS

PDF

34.1 KB Created: 2021-06-18 05:17:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c596facd65fb5752815254144545e78b SHA-1: 407707b8eb36c1273ef71fd9f3b454b4fbdf640c SHA-256: 307e017be5bebf354d5f9812f04bd5d382931fe1af2458f422dfccc108ed5ce8
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.co/app/431946152/hack-coins-roblox-obby-game-hack PDF link annotation
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/how-to-hack-jailbreak-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/free-shoulder-pet-roblox_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/roblox-free-tbc-twitter_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/free-robux-promo-codes-2021_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_off00002f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F70 22204 bytes
SHA-256: b7ba703fe1c70e494609a5f6fc73d593c3a2f755b4a0a753e1194eaaf9817a73
font_01_sfnt_off000060c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C1 18768 bytes
SHA-256: ce385fff1310df31be5dc6b49c927b21ababfa7e9ec5e0abc5083e92d66c1557

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