Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f932f5d999e7246…

MALICIOUS

PDF

33.2 KB Created: 2021-07-09 23:18:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: bce65bbe9c248e10585509f16a930cd0 SHA-1: e1f356acd5f24d78095312e7fb8f377e9bbf4c40 SHA-256: 7f932f5d999e724655a7d2a2d03502a3f2e55367ebfb84b70754f58065270216
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free Robux, directing users to the URL http://netcdn.tw/app/431946152/earn-robux-today-game-hack. This URL is associated with a high-risk redirector, indicating a likely phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into visiting malicious sites, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/earn-robux-today-game-hack PDF link annotation
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/free-hacked-accounts-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/roblox-free-to-take-group_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/is-roblox-downloadable-on-ps4-for-free_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/roblox-hack-robux-download-pc_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/sfx-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/creator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/how-to-have-free-robux-with-site_GM431946152.pdfIn PDF document text
    • http://www.vivaahsathi.com/uploaded_files/userfiles/files/free-robux-2021-april_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9C 22220 bytes
SHA-256: af7da6594c5408fcfa5904b320be76a31265982c26db1af4e70d8d0377bd5962
font_01_sfnt_off00005d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D25 18904 bytes
SHA-256: a9fc496f84e69d01ed59c1cd4e5953deeea203675ea3b95baaba8ca870e83513

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