Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a33c04f96133d3…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 16:58:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6c52347ba02afd4ef3c317cb891916e9 SHA-1: 3f65a24541851c981611c5d5a298fc4919aac958 SHA-256: f2a33c04f96133d35a3420aea0f2a037c9f4d1e6df304b75d681ff97c3fd73f9
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.tw/app/431946152/robux-hacks-2021-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/free-version-of-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/taste3-com-roblox-online-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/new-free-robux-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-cheat-engine-bypass-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-in-one-second_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacker-web-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-no-hack-no-inspect_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/extra-ultra-roblox-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-strucid_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_off0000307b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307B 22648 bytes
SHA-256: 4920854203b54da99eda9ba0640a605b267f255b10980da1cbecbb3d738694d3
font_01_sfnt_off000062eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 19124 bytes
SHA-256: 5acc4cb5eca619de91ddb47cdc70e87d550a63f617f877071c9ac47b9f2637f1

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