Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9cf95293304f2e0…

MALICIOUS

PDF

34.7 KB Created: 2021-07-09 02:16:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f6c4430ba9223b24db0277fb89e0129b SHA-1: df1a6cb7fb2534d09df3ba2f1825b618f71b7483 SHA-256: f9cf95293304f2e08a103a12df72037e31e817a87c17bbd763c25850e2f5a64e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed to lure users into clicking on links related to game hacks and free currency for popular games like Roblox and Coin Master. The primary lure URL, http://netcdn.tw/app/431946152/roblox-com-www-game-hack, suggests a phishing or scam attempt. The ML classifier strongly indicated maliciousness, supporting the interpretation of these links as part of a malicious workflow.

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/431946152/roblox-com-www-game-hack PDF link annotation
    • http://rsudtenriawarubone.com/perpustakaan//repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/how-to-get-offsale-items-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/how-to-get-free-robux-in-one-second_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/rbxvault-free-robux_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/coin-master-hackcom-xyz_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_off0000308a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308A 22432 bytes
SHA-256: 1fad6ff541ccbf5675a7776e69caf83b60edf9e6d93098d96a45ea7204240fdb
font_01_sfnt_off0000627d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627D 19108 bytes
SHA-256: 13c262cfb7031e1ca070be9c3125d0123a2d05a8500d35be8507854e43fbc492

Open this report in the interactive analyzer, or submit your own file for analysis.