Malicious PDF — malware analysis report

Static analysis result for SHA-256 e398402779b3dc49…

MALICIOUS

PDF

36.3 KB Created: 2021-07-04 19:59:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4c7dc3838614cf75a2641a862869ca40 SHA-1: 87a2594672119b9801ee2eddc72689314d790d78 SHA-256: e398402779b3dc49d929391d90e424547b06f92961e1458a11abf688c4213213
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and the document's content suggest an attempt to trick the user into visiting a malicious site, likely for credential harvesting or malware distribution.

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/how-do-you-get-free-robux-2021-game-hack PDF link annotation
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/get-action-hair-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-tag-roblox_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/how-to-get-unlimited-money-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-free-robux_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/how-to-noclip-in-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/how-to-get-fre-robux-on-a-computer_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-robux-at-http-rxnow-eu5-net_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-roblox_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/inappropriate-roblox-hacks_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_off0000345e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x345E 22708 bytes
SHA-256: 9c1948e42adbc3e6ed6c4fcf36a6612911f0ac357f40765bf7136ff11e1b73cd
font_01_sfnt_off000066c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C9 19716 bytes
SHA-256: 0d2f3942e55245e7a14fdb54ac7cb42d00cb555bb8e9738c839b3f9835dfd221

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