Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fed6d707f4afa1e…

MALICIOUS

PDF

35.9 KB Created: 2021-06-29 07:01:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 255a087fbdd2f0591c9237a13e56a6ba SHA-1: ca078a4205d8f5b0fa336fc0e10de3c08310dbcb SHA-256: 7fed6d707f4afa1e3651c7f50bfc25ba0bd543bbaf3e09ff29436b848e61f854
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and free currency, a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of external URIs and a download button lure further support this assessment. Although no scripts were explicitly extracted, the document's structure and embedded links suggest it is designed to trick users into navigating to potentially harmful external resources.

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/app-to-earn-free-robux-for-downloadign-games-game-hack PDF link annotation
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/free-straight-face-roblox_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/roblox-hack-cleints_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/admin-commands-script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/roblox-free-robux-no-waiting_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/robux-rewards_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_off00003464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3464 22020 bytes
SHA-256: 5326efb7a4d82520a90c0f9adfc160d5dbae7787556ae3acb89ed8b7f907c5ec
font_01_sfnt_off00006530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6530 19852 bytes
SHA-256: bfdc981c0cf20f9a4099cd3c76efc4a35cb7b7084b26d37a644892dc14ceec1f

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